I noticed that when running Safari, the power reading for GPU Core Low Side was about 18 A (what does that mean BTW) while for Chrome is was about 35 A.
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iMac Retina Heat management
- Thread starter misho73
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Interesting result. Can you check what clock speed you're at with a 72W power draw on the i7 during handbrake processing? Intel Power Gadget is a fun way to do that.
That was a true torture test....
for me! God... I wouldn't have been surprised if the iMac had become sentient and slapped me silly for playing that atrocity two times in a row.
Anyway... my earlier 4K test of a nature video was under Chrome running Win 7. Max temp reported by GPU-Z was 72c
Now tried your 4K link using Safari under OS X and max temp reported by iStat was 71c. Played it two times in a row.
And OMG! I had to go over and above the call of duty....
Looped it two more times running Chrome under OS X... and GPU temp was at 94c
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Might be time for me to switch to Safari
I found the new Safari build to be faster and more power efficient than Chrome. And the fact that it plays so much better with my iPhone makes it a no-brainer for me. But Chrome is the go-to browser under Win 7 for me.
Will have to revisit this argument once the 64-bit Canary builds of Chrome goes mainstream.
I did that. CPU starts out at 4.2, then fairly quickly drops down to 4.0 before settling in at 3.8. My 2.6 i7 Mini boosts up to 3.4 and pretty much stays there, but somehow the iMac is doing more work than you'd think for that processor speed (or the Mini less). The Mini took 130 minutes for a conversion that took the iMac 80 minutes.
You're a trooper for sticking the trailer out so many times, those temperature differences are quite large!
Interesting results showing that Apple will face the very same backlash in 2017 when the retina iMacs will be failing in droves. Nobody is gonna tell me that an ATI/AMD processor will withstand idle temperatures averaging 70°C with peaks towards 109° through 1, not to mention 2, years.
So what happened to those poor saps who didn't sell their 2011 iMacs/MBP 15's with AMD GPU's that ran hot before their warranty ran out?
I think that's true. Moreover, we're talking about the temperature of the chip here. 70C would be nothing, even sustained indefinitely.
Would a GPU diode temperature of 65-70 deg C under light load be concerning? (several Safari tabs, iTunes, YouTube video running, MS Word, and a secondary Thunderbolt Display running).
I also tried running some 4K YouTube videos. I ran two such videos on the two screens for about 5 minutes. The temperature was in the low 70's. I'm not too sure what to think of this.
Any opinions would be much appreciated!
PR&G
I also tried running some 4K YouTube videos. I ran two such videos on the two screens for about 5 minutes. The temperature was in the low 70's. I'm not too sure what to think of this.
Any opinions would be much appreciated!
PR&G
So does anyone know what the maximum 'safe' temperature is for CPU and GPU?
I've seen 105 on the GPU when rendering with FCP X and I actually saw over 100 watching Netflix with Firefox (had a HDCP error in Safari even though there are no additional screens connected)
I've seen 105 on the GPU when rendering with FCP X and I actually saw over 100 watching Netflix with Firefox (had a HDCP error in Safari even though there are no additional screens connected)
I've swapped to Safari because I noticed Chrome would intermittently freeze, sometimes locking the whole system up. Safari isn't nearly as bad as I thought it would be, I'm pleasantly surprised, but I want to be able to specify where to save a file I've downloaded and I can't understand why Safari hasn't got this option.
In the week I've had my r iMac the only time I've heard the fan was during playing the beta of the new settlers game in Windows which is more likely a driver issue than anything else.
Whenever Apple bring out a new device there is always someone desperate to be the 'one' who discovered a terrible design flaw.
iPhone's that break if you put it in your back pocket and sit down (derr) is a classic example.
I've been using/building/repairing pc's for a living long enough to know I have absolutely no concerns with my new r iMac.
Whenever Apple bring out a new device there is always someone desperate to be the 'one' who discovered a terrible design flaw.
iPhone's that break if you put it in your back pocket and sit down (derr) is a classic example.
I've been using/building/repairing pc's for a living long enough to know I have absolutely no concerns with my new r iMac.
I know you can right click and download linked file as to specify each time. Not sure if you can set a new default though?
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Cheers, Isn't that what the GPU does at 105 degrees though?
I know theres a lot of complaining on another thread about GPU throttling but based on the CPU reducing clock speed at a certain temperature it sounds just like how the GPU throttles?
I guess I'm just wondering if I should be keeping an eye on GPU temperature and panicking if it hits a certain point or just ignore temperatures and crack on using it
Not all links let you do that. I'm sure I read somewhere that being able to choose the download destination was once an option in Safari but was removed for no apparent reason.
Thanks for the reply. It seems that I may have unrealistic expectations. So the ~70 deg C is normal and of no concern in the long term? (Sorry, just have to ask to be sure!
)Thanks for the reply. It seems that I may have unrealistic expectations. So the ~70 deg C is normal and of no concern in the long term? (Sorry, just have to ask to be sure!
It isn't the CPU that people have been concerned with its the M295x that goes to 105c within minutes of tasking the it.
iMac Retina Heat management
Although I use Safari exclusively Chrome is a more power browser (MSE & WebM VP9 and WebM VP8 support) I'd expect it to be more a resource hog.
I would delete it completely if I could get Safari to AirPlay Netflix HTML5. My options are using Safari with Adobe Flash, or Chrome with HTML5. Pick your poison, Adobe Flash or Google Chrome.
Here is an example. Safari is more efficient doing the same task as Chrome but only slightly because its utilizing Flash.
Although I use Safari exclusively Chrome is a more power browser (MSE & WebM VP9 and WebM VP8 support) I'd expect it to be more a resource hog.
I would delete it completely if I could get Safari to AirPlay Netflix HTML5. My options are using Safari with Adobe Flash, or Chrome with HTML5. Pick your poison, Adobe Flash or Google Chrome.
Here is an example. Safari is more efficient doing the same task as Chrome but only slightly because its utilizing Flash.