Do some Googling. It's all over the web.
Max fans: 2700rpm
M295X: 105-108C
CPU: 98-100C
Handbrake, games, multiple videos. You name it. I can't test any more since I returned mine! Be good to see some screenshots though.
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AMD Radeon R9 M295X Core Clock Throttling, Heat, and Performance
- Thread starter Fenn
- Start date
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Do some Googling. It's all over the web.
Max fans: 2700rpm
M295X: 105-108C
CPU: 98-100C
Handbrake, games, multiple videos. You name it. I can't test any more since I returned mine! Be good to see some screenshots though.
Please help me, I'm not that good with google search ,unfortunately I have a fully functional unit and I cannot verify myself
Please somebody just post the screenshot what Astelith asks here. I am still undecided wether to buy this 5k iMac, or build an Hackintosh, or wait additional 6-8 months for the 2nd generation.
Astelith has claimed many times that if the fan spins at full speed the GPU cannot go over 100 C. The others claims that temperatures of 106 C and even more are existing. I really would like to see each of the claimes proved right or wrong.
I have a theory based on the Macbook Pro Retina (mid-2014) examination: It seems that (at least on this Retina Macbook) the fan seems to follow very lazily about rising temps of CPU (or integrated Iris Graphics GPU) causing temps to go up to maximum of 100C (and even throthling to keep it under 100C), untill the fan speeds up up to closely maximum *several minutes later*, still keeping CPU temp on 100C.
However, If I install for e.g. Macs Fan Control, I can set there a profile based on GPU temperature that for example starts fan spinning when the GPU temp goes over 60C and tries to keep maximum temp on 90C.
This seems to change fan behaviour to much more aggressive, so that it wont take several minutes to spin it up, but only a some seconds after the game has started (or GPU stressed to maximum), reacting almost immediately to rising temp of the chip. Also I was able to lower the maximum temps of CPU/GPU to stay between 93-96C withouth throttling (comparing to 100C with throttling on the default fan settings). This on Macbook Pro Retina mid-2014.
I have tested this with running Windows 10 Technical Preview installed via bootcamp, monitoring the temps with GPU-Z and Core Temps and using Furmark (and also GTA4) for stressing the GPU.
In my view it seems that (at least with Macbook Pro Retina mid-2014) the default setting of fan control is just set to react very lazily on CPU/GPU temps and possibly not utilizing the maximum rpm of the fan at all situations it should.
For example the fan stays on 1200-1300 rpm on idle on Macbook Pro. When I started Furmark, the fan did not immediately reacted at all, though CPU temp jumped immediately (in couple of seconds) to 80, 90, 95 and 100C - causing CPU/iGPU to throttle and lower the temp. The fan itself didn't seem to reach the maximum of 6200rpm at any point, even though the temp stayed in 100C (TjMax is 105C). However when I set a custom profile with Macs Fan Control, I was able to get fan to spin up to 6200rpm nearly immediately keeping the temps many degrees lower on all gaming sessions/Furmark tests.
So this keeps me wonder wether it is the same with new retina iMac 5k: If the Apple has made fan to react very slowly on rising temps (or not even utilizing the full potential of the fan before CPU/GPU throttling) to keep it much as silent as possible, there is a slight change that this problem could be eased or even fixed using the 3rd party fan control software that allows making custom fan profile (like Macs Fan Control does) to set fan to react much more aggressively on GPU load.
Though this applies only if Astelith's claim is true with all 5k iMacs (settings fan rpm to maximum manually would keep GPU under 100C on all conditions).
So please all riMac owners: Install Macs Fan Control (available both OS X and Windows for free) and set the fan to maximum and run then the full GPU stress test (like Furmark) and take a screenshot of GPU-Z showing the GPU load (100%), GPU temp (under 100C, or whatever it is?) and also Macs Fan Control showing that iMac fan spins the maximum rpm (which should be 2700-2800rpm on riMac).
So that would simply end the speculation of this. If I can see that temp still goes over 100C, I am definetely not going to order this Imac 5k as then the temp problem is not fixable even with 3rd party fan control software. If not, I am happy to use 3rd party fan control to prevent throttling on games.
OF course this makes iMac to be even more noisy that it already is, as it ramps the fan to maximum immediately. But I think this is much of an subjectional view, what is noisy and not. To me its much more important that on games the GPU's full potential is being utilitized and the GPU *does not throttle* on any circumstances.
My sollution for the noise during the gaming is simply below
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
DISCLAIMER! Please notice that currently Macs Fan Control cannot control your fan temp based on both CPU and GPU temp (using the censor based profile). It is possible to set control it only based on one of the censors, for e.g. GPU, but this may lead to unsufficient cooling on case where only CPU is being stressed.
This is a problem caused by the fact that modern Macs (like iMac 5k and Macbook Pro retina) has only single fan, and not seperate fans for CPU and GPU. And Macs Fan Control can control the single fan only from single censor source.
I have just couple of days ago submitted a feature request to Macs Fan Control forum for development team to address this issue, hoping a feature that allows set temp censor sources for single fan for multiple censors. No reply so far.
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Looking forward to see some screenshots!
Astelith has claimed many times that if the fan spins at full speed the GPU cannot go over 100 C. The others claims that temperatures of 106 C and even more are existing. I really would like to see each of the claimes proved right or wrong.
I have a theory based on the Macbook Pro Retina (mid-2014) examination: It seems that (at least on this Retina Macbook) the fan seems to follow very lazily about rising temps of CPU (or integrated Iris Graphics GPU) causing temps to go up to maximum of 100C (and even throthling to keep it under 100C), untill the fan speeds up up to closely maximum *several minutes later*, still keeping CPU temp on 100C.
However, If I install for e.g. Macs Fan Control, I can set there a profile based on GPU temperature that for example starts fan spinning when the GPU temp goes over 60C and tries to keep maximum temp on 90C.
This seems to change fan behaviour to much more aggressive, so that it wont take several minutes to spin it up, but only a some seconds after the game has started (or GPU stressed to maximum), reacting almost immediately to rising temp of the chip. Also I was able to lower the maximum temps of CPU/GPU to stay between 93-96C withouth throttling (comparing to 100C with throttling on the default fan settings). This on Macbook Pro Retina mid-2014.
I have tested this with running Windows 10 Technical Preview installed via bootcamp, monitoring the temps with GPU-Z and Core Temps and using Furmark (and also GTA4) for stressing the GPU.
In my view it seems that (at least with Macbook Pro Retina mid-2014) the default setting of fan control is just set to react very lazily on CPU/GPU temps and possibly not utilizing the maximum rpm of the fan at all situations it should.
For example the fan stays on 1200-1300 rpm on idle on Macbook Pro. When I started Furmark, the fan did not immediately reacted at all, though CPU temp jumped immediately (in couple of seconds) to 80, 90, 95 and 100C - causing CPU/iGPU to throttle and lower the temp. The fan itself didn't seem to reach the maximum of 6200rpm at any point, even though the temp stayed in 100C (TjMax is 105C). However when I set a custom profile with Macs Fan Control, I was able to get fan to spin up to 6200rpm nearly immediately keeping the temps many degrees lower on all gaming sessions/Furmark tests.
So this keeps me wonder wether it is the same with new retina iMac 5k: If the Apple has made fan to react very slowly on rising temps (or not even utilizing the full potential of the fan before CPU/GPU throttling) to keep it much as silent as possible, there is a slight change that this problem could be eased or even fixed using the 3rd party fan control software that allows making custom fan profile (like Macs Fan Control does) to set fan to react much more aggressively on GPU load.
Though this applies only if Astelith's claim is true with all 5k iMacs (settings fan rpm to maximum manually would keep GPU under 100C on all conditions).
So please all riMac owners: Install Macs Fan Control (available both OS X and Windows for free) and set the fan to maximum and run then the full GPU stress test (like Furmark) and take a screenshot of GPU-Z showing the GPU load (100%), GPU temp (under 100C, or whatever it is?) and also Macs Fan Control showing that iMac fan spins the maximum rpm (which should be 2700-2800rpm on riMac).
So that would simply end the speculation of this. If I can see that temp still goes over 100C, I am definetely not going to order this Imac 5k as then the temp problem is not fixable even with 3rd party fan control software. If not, I am happy to use 3rd party fan control to prevent throttling on games.
OF course this makes iMac to be even more noisy that it already is, as it ramps the fan to maximum immediately. But I think this is much of an subjectional view, what is noisy and not. To me its much more important that on games the GPU's full potential is being utilitized and the GPU *does not throttle* on any circumstances.
My sollution for the noise during the gaming is simply below
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
DISCLAIMER! Please notice that currently Macs Fan Control cannot control your fan temp based on both CPU and GPU temp (using the censor based profile). It is possible to set control it only based on one of the censors, for e.g. GPU, but this may lead to unsufficient cooling on case where only CPU is being stressed.
This is a problem caused by the fact that modern Macs (like iMac 5k and Macbook Pro retina) has only single fan, and not seperate fans for CPU and GPU. And Macs Fan Control can control the single fan only from single censor source.
I have just couple of days ago submitted a feature request to Macs Fan Control forum for development team to address this issue, hoping a feature that allows set temp censor sources for single fan for multiple censors. No reply so far.
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Looking forward to see some screenshots!
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Easy, play a game. I managed it in Borderlands 2 and it took about 30 seconds.
This isn't an issue that's only happening on some machines - if it hasn't happened on yours and you HAVE been playing games etc, please say so.
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Please help me, I'm not that good with google search ,unfortunately I have a fully functional unit and I cannot verify myself
Please somebody just post the screenshot what Astelith asks here. I am still undecided wether to buy this 5k iMac, or build an Hackintosh, or wait additional 6-8 months for the 2nd generation.
Astelith has claimed many times that if the fan spins at full speed the GPU cannot go over 100 C. The others claims that temperatures of 106 C and even more are existing. I really would like to see each of the claimes proved right or wrong.
I have a theory based on the Macbook Pro Retina (mid-2014) examination: It seems that (at least on this Retina Macbook) the fan seems to follow very lazily about rising temps of CPU (or integrated Iris Graphics GPU) causing temps to go up to maximum of 100C (and even throthling to keep it under 100C), untill the fan speeds up up to closely maximum *several minutes later*, still keeping CPU temp on 100C.
However, If I install for e.g. Macs Fan Control, I can set there a profile based on GPU temperature that for example starts fan spinning when the GPU temp goes over 60C and tries to keep maximum temp on 90C.
This seems to change fan behaviour to much more aggressive, so that it wont take several minutes to spin it up, but only a some seconds after the game has started (or GPU stressed to maximum), reacting almost immediately to rising temp of the chip. Also I was able to lower the maximum temps of CPU/GPU to stay between 93-96C withouth throttling (comparing to 100C with throttling on the default fan settings). This on Macbook Pro Retina mid-2014.
I have tested this with running Windows 10 Technical Preview installed via bootcamp, monitoring the temps with GPU-Z and Core Temps and using Furmark (and also GTA4) for stressing the GPU.
In my view it seems that (at least with Macbook Pro Retina mid-2014) the default setting of fan control is just set to react very lazily on CPU/GPU temps and possibly not utilizing the maximum rpm of the fan at all situations it should.
For example the fan stays on 1200-1300 rpm on idle on Macbook Pro. When I started Furmark, the fan did not immediately reacted at all, though CPU temp jumped immediately (in couple of seconds) to 80, 90, 95 and 100C - causing CPU/iGPU to throttle and lower the temp. The fan itself didn't seem to reach the maximum of 6200rpm at any point, even though the temp stayed in 100C (TjMax is 105C). However when I set a custom profile with Macs Fan Control, I was able to get fan to spin up to 6200rpm nearly immediately keeping the temps many degrees lower on all gaming sessions/Furmark tests.
So this keeps me wonder wether it is the same with new retina iMac 5k: If the Apple has made fan to react very slowly on rising temps (or not even utilizing the full potential of the fan before CPU/GPU throttling) to keep it much as silent as possible, there is a slight change that this problem could be eased or even fixed using the 3rd party fan control software that allows making custom fan profile (like Macs Fan Control does) to set fan to react much more aggressively on GPU load.
Though this applies only if Astelith's claim is true with all 5k iMacs (settings fan rpm to maximum manually would keep GPU under 100C on all conditions).
So please all riMac owners: Install Macs Fan Control (available both OS X and Windows for free) and set the fan to maximum and run then the full GPU stress test (like Furmark) and take a screenshot of GPU-Z showing the GPU load (100%), GPU temp (under 100C, or whatever it is?) and also Macs Fan Control showing that iMac fan spins the maximum rpm (which should be 2700-2800rpm on riMac).
So that would simply end the speculation of this. If I can see that temp still goes over 100C, I am definetely not going to order this Imac 5k as then the temp problem is not fixable even with 3rd party fan control software. If not, I am happy to use 3rd party fan control to prevent throttling on games.
OF course this makes iMac to be even more noisy that it already is, as it ramps the fan to maximum immediately. But I think this is much of an subjectional view, what is noisy and not. To me its much more important that on games the GPU's full potential is being utilitized and the GPU *does not throttle* on any circumstances.
My sollution for the noise during the gaming is simply below
Image
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
DISCLAIMER! Please notice that currently Macs Fan Control cannot control your fan temp based on both CPU and GPU temp (using the censor based profile). It is possible to set control it only based on one of the censors, for e.g. GPU, but this may lead to unsufficient cooling on case where only CPU is being stressed.
This is a problem caused by the fact that modern Macs (like iMac 5k and Macbook Pro retina) has only single fan, and not seperate fans for CPU and GPU. And Macs Fan Control can control the single fan only from single censor source.
I have just couple of days ago submitted a feature request to Macs Fan Control forum for development team to address this issue, hoping a feature that allows set temp censor sources for single fan for multiple censors. No reply so far.
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Looking forward to see some screenshots!
There's many screenshots all over the internet, and I'm pretty sure in this thread, it IS happening- the question isn't whether it's happening or not, but whether it's going to shorten their lifespan. Also, WE SHOULD NOT HAVE TO install utilities etc to keep the GPU cool - that's ridiculous. Again, this is an EXPENSIVE machine, it should be near perfect, and not loud, overheating etc. Go into a freaking Apple store with a game on a USB and play it, the same thing will happen.
Not to mention, even WITH a utility, the fan on 2300RPM is much louder than previous models of iMac in this body. Louder is a bad thing, therefore not good enough. Personally I can probably handle that level of noise, but I don't see why I should have to when previous models didn't have this issue.
'In a vacuum' all of that installing utilities and arguing about fan speed noise makes sense, but this is a £2000+ machine by a company who has unfortunately set a precedent of getting it right - so when it's louder/ significantly hotter by comparison, then there's an issue.
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i for one think it should be the other way round. I'd like to see some screenshots of Astelith's iMac in mid game with a cooler GPU and lower fan speed.
To be honest what worries me isn't the fact that the GPU gets hot, its the fact that the GPU STAYS hot. If you're playing a game for 5 hours for example, the GPU will run 100-105 degrees for the entire time, and the fan will stay loud the whole time as well.
Go some page backward, I provided tons of screenshot of tests, and I have proved that a fully functional machine can work perfectly fine out of the box without doing anything like fan control software.
My iMac never passed 101 degrees, even after hours of games, with no fan control active and hardly going over 2000 rpm
The throttling start to kick after 105 with a noticeable drop of performance around 108, but from 100/103 and even 104 the performance is the same as 60 degrees.
And with full gpu/cpu plus fan at maximum (2700) the temp is always below 90.
I posted proofs supporting what I'm writing, so I expect proofs from who is saying that I'm wrong, and in case, happy to reconsider my opinion.
There are a lot of wrong statements here about throttling and other things, be careful of what you post, people can make bad decision based on wrong things
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...and, a lot of people is writing without owning or even ever seen a retina iMac, this is weird.
I own one. It's being exchanged for another one because of light bleeding in the retina display, which is an issue that apparently NO ONE at Apple has heard of, despite it being prevalent since 2011 (but that's for another thread...). But whilst I have it I did the afore mentioned test... which is where my evidence is.
funny that this threat is still alive as the facts are clear.
I have been a 5k owner for couple of days and returned mine to apple because of ridiculous fan noise and heat after just 2 minutes after starting a game or any other cpu or gpu intensive task.
as you may have read, many people are impacted and it's because it's a flawed design by apple. I now own a 2013 imac and have no problems at all with noise or heat even after 4 hours hard-core gaming in full resolution and max settings the imac is virtually silent.
just get rid of this faulty machine or even better: buy the 2013 model. the first couple of days are hard without retina screen but then it's no regret and all fun.
hope apple would have admit it (steve jobs would have...) and hope they'll fix it in the 2015 upgrade with hopefully another graphics card.
I have been a 5k owner for couple of days and returned mine to apple because of ridiculous fan noise and heat after just 2 minutes after starting a game or any other cpu or gpu intensive task.
as you may have read, many people are impacted and it's because it's a flawed design by apple. I now own a 2013 imac and have no problems at all with noise or heat even after 4 hours hard-core gaming in full resolution and max settings the imac is virtually silent.
just get rid of this faulty machine or even better: buy the 2013 model. the first couple of days are hard without retina screen but then it's no regret and all fun.
hope apple would have admit it (steve jobs would have...) and hope they'll fix it in the 2015 upgrade with hopefully another graphics card.
What evidence ? Post it here please.
Anybody here currently owning a "faulty" imac ? All gone ? Understand that without proof you are ridiculous
AMD Radeon R9 M295X Core Clock Throttling, Heat, and Performance
Please stop confusing this thread. As many, many people have pulled you out on, you have NOT proved this.
You have proven that by installing fan software, putting the fans at 2700rpm and running specific benchmarks, you can just about keep the GPU at 101C. This is absolutely ridiculous.
There is absolutely no evidence of you playing a game or doing any other GPU-intensive task, with sub-2300rpm fans, and sub-100C temperatures.
Even if you do provide screenshots now, people will question it because you have tried to skew results too many times with manual intervention. A clear video is the only proof I'll accept. Even then you'd need to prove no third-party fan control is installed.
The proof that these machines let the GPU run to throttling temperatures is ALL over the Internet. I trust the tens/hundreds of concerns and reports over your tainted screenshots, sorry. You need to disprove, since you're arguing against the majority, I'm afraid.
As so many people have said - it DOES happen, it's just a question of whether it was ever supposed to happen, or if it is causing damage. No-one knows.
Please stop confusing this thread. As many, many people have pulled you out on, you have NOT proved this.
You have proven that by installing fan software, putting the fans at 2700rpm and running specific benchmarks, you can just about keep the GPU at 101C. This is absolutely ridiculous.
There is absolutely no evidence of you playing a game or doing any other GPU-intensive task, with sub-2300rpm fans, and sub-100C temperatures.
Even if you do provide screenshots now, people will question it because you have tried to skew results too many times with manual intervention. A clear video is the only proof I'll accept. Even then you'd need to prove no third-party fan control is installed.
The proof that these machines let the GPU run to throttling temperatures is ALL over the Internet. I trust the tens/hundreds of concerns and reports over your tainted screenshots, sorry. You need to disprove, since you're arguing against the majority, I'm afraid.
As so many people have said - it DOES happen, it's just a question of whether it was ever supposed to happen, or if it is causing damage. No-one knows.
The problem, for you, is I can make a video confirming what I'm writing (and I will do it later at this point) but you all can't prove me wrong, this is the only reality.
My test was accurate and exhaustive, so you are not honest and/or not a very smart one
I hate to repeat myself but I'm the only one with real proof, you are only talking about thin air
My test was accurate and exhaustive, so you are not honest and/or not a very smart one
I hate to repeat myself but I'm the only one with real proof, you are only talking about thin air
AMD Radeon R9 M295X Core Clock Throttling, Heat, and Performance
I've already posted a video of proof. Sorry to burst your bubble.
The problem, for you, is I can make a video confirming what I'm writing (and I will do it later at this point) but you all can't prove me wrong, this is the only reality.
My test was accurate and exhaustive, so you are not honest and/or not a very smart one
I hate to repeat myself but I'm the only one with real proof, you are only talking about thin air
I've already posted a video of proof. Sorry to burst your bubble.
I think andy9l already post his video on post #458 which shows the GPU run at around 106C with 100% fan speed, isn't it? What proof you are looking for?
I'm hoping it's not a flawed design and that its intentional. It is a MUCH more powerful GPU after all.
You're missing the point - none of these iMacs are faulty, YET. And I for one simply don't believe you on your claim. Please can you run a game without any software controlling any of the fans etc, then state what the game is - basically do the below:
The problem, for you, is I can make a video confirming what I'm writing (and I will do it later at this point) but you all can't prove me wrong, this is the only reality.
My test was accurate and exhaustive, so you are not honest and/or not a very smart one
I hate to repeat myself but I'm the only one with real proof, you are only talking about thin air
I assume that video will be as instructed? Please make sure you tick the following things:
- prove there's no other software controlling the fan and/or GPU speed. Maybe by opening activity monitor whilst videoing.
- run a game/ graphically intensive thing AND PLAY IT (ie if its a game don't just let it sit on the start screen) for about 5 minutes. Then whilst still doing this show us iStat etc.
- IF your claim is true, that means that it is actually possible for this iMac to be fine, and it just happens that there are a LOT of faulty ones out there. But judging by standalone reads and the rumours all over the net, I doubt this, unfortunately. Some people are even suggesting that theGPU in question was originally not going to be used because of the heat, but Apple had a gun to AMDs head because of us demanding consumers, so AMD gave them the only thing that worked without weighing up the longterm consequences. I'm starting to doubt if this configuration of iMac was even tested under heavy load EVER, before being approved for shipping.
Sorry to be a pain, but would you mind reposting the link? I can't seem to find it :s
So, fan noise aside I've decided that I'll only keep this computer if the verdict is that the 105 degree operating temperature during gaming won't cause it to fry in 2 years time. I would imagine it strange for Apple to completely miss this because they may have learnt from their mistakes, so here's hoping it's actually all completely fine and the high temps is completely normal in this rare occasion. However, I don't want to have to pay an extra £139 for peace of mind, as that should come by default with a machine of this calibre. So, the investigation continues into that one question alone, will the heat burn it out early? - has AMD mentioned anything? Surely if this is as widespread as it sounds (ie every computer except Apparently Astelith's) then someone must have a more scientific breakdown?
The fan sensor of GPU-Z is not working with the 5K and in Windows there is an issue preventing the fan spin over 1200rpm without any fan control software, as far as we know you may had this problem with no fan spinning.
I quote myself from the other Poll thread :
___________________________________________________
Maybe some figures will help you and others understand some basics about how to read a graphic and what the throttling works :
In the last screenshot you can see it in action, first there's a "up and down" to prevent overheating, when it's not enough the clock will drop again, more the temp goes up more the clock (and voltage) goes down.
Look also the RPM on GPU-Z is clearly not working.
And the max frequency is UP TO 850 with the BOOST (so more than "cruise" clock), it means the GPU can increase or decrease the clock based on workload or, in other cases than iMacs, like Desktop PC with big GPU and Poor CPU Power, insufficient inputs from CPU (CPU Limited), but it's not Throttling, that will activate only after X Temp. where X is decided by manufacturer to avoid failure, >104° is the case for the M295X.
And stop comparing NVIDIA with AMD, they have different ways to operate the clock, same story between different version of AMD chips.
______________________________
Endo of the old post
I can make a video like you asked, no problem at all, in the meantime have look at this screen showing the graphs of a chapter in Metro Last light:
Max temp 101°C, and the fan wasn't loud, probabily around 2100rpm, and of course, on auto (so system controlled)
And don't get confused by the frequency 850MHz is the maximum with the boost, it's normal to have a bar floating with that type of AMD architecture, the Throttling will eventually cut the frequency at below 540MHz with a drastic loss of FPS (Like from 40 to 8)
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And even if someone have an iMac running at >105° with fan at full speed, it's a faulty unit, call Apple and get a new unit, or get it fixed and enjoy the beast
But stop calling the Retina iMac a flaw design
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Max temp 101°C, and the fan wasn't loud, probabily around 2100rpm, and of course, on auto (so system controlled)
And don't get confused by the frequency 850MHz is the maximum with the boost, it's normal to have a bar floating with that type of AMD architecture, the Throttling will eventually cut the frequency at below 540MHz with a drastic loss of FPS (Like from 40 to 8)
----------
And even if someone have an iMac running at >105° with fan at full speed, it's a faulty unit, call Apple and get a new unit, or get it fixed and enjoy the beast
But stop calling the Retina iMac a flaw design
So you're happy with the GPU running at 100 degrees, but are saying that just 5 degrees ABOVE that are the macs with issues?
My temp is 5° below the faulty ones, and so?
I'm happy with 99/100/101°C, if it runs at that temps it mean that it was designed todo it, the fan is running around 2000 (over a maximum of 2700) when I play games and it's almost always at 1200 when working on Photoshop CC, Final Cut Pro X etc...
I'm very happy with my machine, everything runs great, even at 5K and for me is not noisy (or in a normal range), I have no reason to be disappointed.
So, if I'm not mistaken you have an iMac that runs games well but over 105° C right ? have you ever tried to reset the SMC ? or to use a software like macs fan control and to set it to "auto" ? Maybe the problem is only in the sensors.
Throttling means you cannot play at all.
You're happy with a GPU that runs at 100 degrees 100% of the time it's playing a game? That still seems just a trifle hot to me. And by trifle, I mean a hot trifle, that's been put in a toaster.
The issue really isn't about throttling any more - the issue is will this GPU burn out early, or is it intentional and 'OK' for it to run at this temp. You don't need to keep saying it works fine for you - on surface value I'm pretty sure it works fine for everyone in this thread. At the moment.
100° C it's normal for ad AMD /ATI high end board, it's been years that their boards runs that hot
I've never seen more than 90°C...
http://www.tomshardware.com/reviews/radeon-r9-290-and-290x,3728-6.html
On desktop models, they clock down when they reach 95°C...
http://www.tomshardware.com/reviews/radeon-r9-290-review-benchmark,3659.html
I mean laptop GPUs, and older models, but this is not the point.
If Apple/AMD decided to start the spin up of the fan at 96° and set the Target T° at 100° with a throttling for thermal protection starting soft at 105° and pushing all the frequency down at 108° it means that they've tested that chip.
It's called thermal protection for a reason, to prevent overheating, and so, if we are below that point for me 100° is a perfectly normal temp., who am I to question some kick-ass engineer from AMD/Apple that develop this GPU ?
AMD Radeon R9 M295X Core Clock Throttling, Heat, and Performance
No there absolutely is not. My fans were running at 2300rpm. You can actually hear them running, unless I muted the video (can't remember).
There is ABSOLUTELY no way the fan on Windows is stuck at 1200rpm. The flipping thing would shutdown in a matter of minutes if that were the case.
Anyone with a 5K iMac can prove that the fan spins up. A chunk of this entire thread has been about the fan speed and heat on WINDOWS. If your fans aren't spinning up on Windows, it's YOU with the faulty iMac.
I look forward to your video.
Edit: just noticed your previous post actually highlights the fact that your fan is above 1200rpm. I don't know what you're talking about anymore. It's got too far-fetched.
No there absolutely is not. My fans were running at 2300rpm. You can actually hear them running, unless I muted the video (can't remember).
There is ABSOLUTELY no way the fan on Windows is stuck at 1200rpm. The flipping thing would shutdown in a matter of minutes if that were the case.
Anyone with a 5K iMac can prove that the fan spins up. A chunk of this entire thread has been about the fan speed and heat on WINDOWS. If your fans aren't spinning up on Windows, it's YOU with the faulty iMac.
I look forward to your video.
Edit: just noticed your previous post actually highlights the fact that your fan is above 1200rpm. I don't know what you're talking about anymore. It's got too far-fetched.
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I'd just like to add this:
I have a high end 5K iMac, i7/295 etc. I run Windows 8.1 for some games, and I just installed Macs Fan Control to test your theory of the fan not speeding up past 1200rpm...
And my findings? Nonsense. Just fired up some Diablo 3, and the fans eventually found their way to 2300rpm, which APPEARS to be Apple's lock for max fan speed. Perhaps the fan could hit max speed (2700rpm), but it looks like that would probably be a really worst-case scenario if that happened, and it's never happened for me under OS X or Windows 8.1. I'd recognize that sort of fan noise as it's quite loud (when manually set to 2700rpm).
Here's a screenshot, as well, as proof.
There's NO issue with gaming in Windows 8.1 on a 5K iMac.
FYI, it was really taking a long time for the fan to hit 2300rpm at 2560x1440 in Diablo 3 because the GPU wasn't being hammered, but when set to 3840x2160 (the max res Windows 8.1 currently supports) the fan got to 2300rpm in under 10 seconds, so it was a simple test.
