Seems like the temperatures and performance with video is much better than previous 5K iMacs, certainly stutters and overheating is not as much of a concern now
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Radeon Pro 580 8 GB Preformance?
- Thread starter MyRumors
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Hey everyone,
I'm very new to Apple and Macrumors.
Quick question: I will mainly be using the iMac for 4K video editing and publishing as well as coding.
How do I test an iMac to see if it's going to satisfy my needs? What software? What to look for?
All comments appreciated!
I'm very new to Apple and Macrumors.
Quick question: I will mainly be using the iMac for 4K video editing and publishing as well as coding.
How do I test an iMac to see if it's going to satisfy my needs? What software? What to look for?
All comments appreciated!
So the Radeon Pro 580 is only 1/3 faster than the 775M on this test. Disappointing. I hope it performs better on other tests.
[doublepost=1497507253][/doublepost]
That's more in line with what I except from the 580 (many onscreen tests cannot be used since Metal is limited to 120 fps by design). The 775M should be far behind both cards, so the Valley results don't make much sense to me.
EDIT: I suspect VSync is enabled on the Valley test. The 29.4 fps figures are suspiciously close to 30 fps. This should penalise both cards.
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Unigine is Not very modern Benchmark, but its the only GPU benchmark that is available on Mac.
Perhaps it is because it still uses OpenGL?
.As it turns out, Ars Technica just posted an article detailing iMac comparisons across refreshes dating back to the 2011-2012 hardware: https://arstechnica.com/apple/2017/...f-high-end-imac-performance-from-2012-to-now/
Interesting reading.
Interesting reading.
Wow! If that is true, i.e. about 50% GPU improvement over my M395X, then count me in!
Considering that AMD claims a 2.5x performance-per-watt gain for Polaris, I think it's pretty clear why the Radeon Pro 580 seems to run so much cooler than the last generation.
The new Polaris GPUs are only 50% faster, but also (at a wild guess) might use only 80% of the power. That works out to 1.875x the perf-per-watt of the previous 28nm chips (to account for marketing BS). And cooler and quieter iMacs!
The Valley results don't make sense to me either as I get 40.1fps and score of 1679 on my late 2015 iMac with 395X. No different to yours.
I'll run them again today and see if I get different results. I'll run tomb raider and diablo 3 as well to see what numbers that shows up with.
What settings were you using?
I was running at 2560x1440, I ran again this morning and the results were similar, 39.3 fps.
At 1920x1080 the results were 64 fps.
2560x1440
Settings
https://flic.kr/p/VPjDUF
Results
https://flic.kr/p/UzJfyK
1920x1080
Settings
https://flic.kr/p/UwMsRd
Results
https://flic.kr/p/UzJfBF
[EDIT]
Tomb Raider
2560x1440 - High Preset
Avg FPS 73.7
https://flic.kr/p/UwPctf
According to this:
http://barefeats.com/imac5k20.html
The m395x hits 55fps
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Thats impressive. These are the temps the high end iMacs should of had all along. The 580 seems like an excellent upgrade.
It's more tempting for me to upgrade now *must fight the urge*
I suggest trying Heroes of the Storm in 5K.
When in game, press Control + Alt(Option) + F on keyboard to display in-game framecounter.
I think most people will be impressed with numbers.
Try for example high settings, and Metal API. Should do better job on AMD GPU than it is doing on Nvidia.
When in game, press Control + Alt(Option) + F on keyboard to display in-game framecounter.
I think most people will be impressed with numbers
.Try for example high settings, and Metal API. Should do better job on AMD GPU than it is doing on Nvidia.
FWIW, regardless of feeling about them giving Apple information they never needed too. I have a 780m which I keep up to date with NVIDIA's own tools for both OS X and Windows. its been seamless and I have seen games improve with updates
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seeing as I have a 780m this is not making me want to upgrade.
Unigine Valley has always preformed better on nVidia than AMD. Sometimes benchmarks have a bias and this is one good example. It is good for comparing nVidia to nVidia or AMD to AMD but it loses much comparing one to the other.
I would love to see an iMac with a GTX 1080 but, by all accounts, the 580 is somewhere between the GTX 1070 and 1060 which is much faster than the 780M I am currently rocking in my 2013 iMac until my new 5k with 580 arrives.
Seeing I have a 780m I have no clue what you are talking about.
What games launched in 2016 that actually require high gpu usage have you seen improvements? And what resolution do you play at? And what god you get?
Here is how desktop GTX 780 performs in modern games:
http://www.techspot.com/review/1418-geforce-gtx-780-four-years-later/page3.html
It is also compared to many other GPUs.
The thing is: GTX 780M is not based on desktop GTX 780. It is based on GTX 770. And it is around the same performance as current GTX 1050 Ti.
Radeon Pro 575 from iMac is actually going to perform in modern games on the same level, as desktop GTX 780. RP 575 which uses the same chip as RX 470, is going to be much faster than GTX 780M from iMac.
I have said previously: Nvidia GPUs are getting old much quicker than AMD hardware.
http://www.techspot.com/review/1418-geforce-gtx-780-four-years-later/page3.html
It is also compared to many other GPUs.
The thing is: GTX 780M is not based on desktop GTX 780. It is based on GTX 770. And it is around the same performance as current GTX 1050 Ti.
Radeon Pro 575 from iMac is actually going to perform in modern games on the same level, as desktop GTX 780. RP 575 which uses the same chip as RX 470, is going to be much faster than GTX 780M from iMac.
I have said previously: Nvidia GPUs are getting old much quicker than AMD hardware
.To compare
MBP Late 2016 (Maxed)
Geekbench CPU
https://browser.geekbench.com/v4/cpu/3122454 - 4347 - 15193
Geekbench GPU
https://browser.geekbench.com/v4/compute/831241 - 57658
Heaven 4.0 1080p Medium OpenGL
FPS: 32.8
Score: 826
iMac 27 2017 (Max CPU/GPU, 32GB ram)
Geekbench CPU:
https://browser.geekbench.com/v4/cpu/3127008 - 5840 - 20189
Geekbench GPU:
https://browser.geekbench.com/v4/compute/832743 - 119270
Heaven 4.0 1080p Medium OpenGL
FPS 84.3
Score: 2123
MBP Late 2016 (Maxed)
Geekbench CPU
https://browser.geekbench.com/v4/cpu/3122454 - 4347 - 15193
Geekbench GPU
https://browser.geekbench.com/v4/compute/831241 - 57658
Heaven 4.0 1080p Medium OpenGL
FPS: 32.8
Score: 826
iMac 27 2017 (Max CPU/GPU, 32GB ram)
Geekbench CPU:
https://browser.geekbench.com/v4/cpu/3127008 - 5840 - 20189
Geekbench GPU:
https://browser.geekbench.com/v4/compute/832743 - 119270
Heaven 4.0 1080p Medium OpenGL
FPS 84.3
Score: 2123
As an owner of this iMac 2013 i'm suprised that Apple was able to push the max. temp down so far. With the TDP of the 580 GPU i feared the new iMac would be even more on the sound level.
Can you make a compare from the noise level, or better - how is the rpm when the GPU is under load?
Playing WoT or WoWs on the iMac 2013 needs a headset with the fan reaching 3000rpm when both games are in the startmenue
No, it's actually very true. A game running at 1440p on a monitor native to that resolution, will look sharper than on a UHD monitor scaled down to 1440p, with all things being equal.
Some applications and games handle this better than others, and some people will not see a difference, but it is there.
I picked up the base 580 model today from the Apple Store. Installed a couple of games and my impressions are.... wow!! Very impressed. This is coming from someone with a 15R3 w/ a GTX 1070. I was able to play WoW (OSX) at 5k, with just about everything on High minus Shadows, SSAO and Sunshafts and maintain 60fps in various legion zones.
I also installed bootcamp and loaded up Overwatch. Was able to maintain 60fps @1440p with just about everything at High/Ultra (Shadows at Medium).
By the way has anyone else seen an issue with brightness in bootcamp? Whenever I try to adjust, I can never max out brightness unless I enable/disable Virtual Super Resolution in the AMD control panel. Even after about 10 mins it will default to about 75% brightness. Checked the energy settings and everything looks good.
I also installed bootcamp and loaded up Overwatch. Was able to maintain 60fps @1440p with just about everything at High/Ultra (Shadows at Medium).
By the way has anyone else seen an issue with brightness in bootcamp? Whenever I try to adjust, I can never max out brightness unless I enable/disable Virtual Super Resolution in the AMD control panel. Even after about 10 mins it will default to about 75% brightness. Checked the energy settings and everything looks good.