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post #781 of 1788
Quote:
Originally Posted by JonathanQC30 View Post

increasing hbm speeds gives more than the gpu overclock... so yes smile.gif i think i win like 5 ish % with my 500@570 overclock, and around 3-3.1% from 1050@1180-90 overclock, i wonder why the overclock doesn't give much result on that card wink.gif

Are you sure the card isn't throttling down when clocked at 1180-90? The reason i ask is HBM doesnt throttle but the core clock will - hence the larger increase in performance overclocking the HBM vs. the core. 1050-> 1180 should yield a far great percentage increase - unless it was throttling due to power draw.
post #782 of 1788
Quote:
Originally Posted by MickyPearce View Post

Are you sure the card isn't throttling down when clocked at 1180-90? The reason i ask is HBM doesnt throttle but the core clock will - hence the larger increase in performance overclocking the HBM vs. the core. 1050-> 1180 should yield a far great percentage increase - unless it was throttling due to power draw.

in 3dmark you got a part of the score which is cpu related and the last test is combined, so i win more than 8.1% in games only, probably more like 10-12% overall performance
Quote:
Originally Posted by MickyPearce View Post

It has a reasonable impact on performance at 4K and with titles that respond well to mem overclocks. The latest Hitman and The Witcher 3 are good examples. Obviously the core clock will always be the one you try and max out but since i've reached the limit on the core and HBM uses between 5 and 8 watts I may as well push it further.

Also it's just a good feeling to expand the bandwidth advantage over the 1080 - its about the only claim to fame the Fiji GPU has now vs. the 1080 tongue.gif

AMD is doing a lot of efforts right now to get better drivers on the market, it is AMD weakness, bad drivers for years! I have hope that with drivers optimisation, the fury x will continue to improve. Last August the Fury x was 15% less strong than a 980ti, now its on par with a titan x, lets see what it gives in one year from now smile.gif
post #783 of 1788
Thanks for the replies!

@MickyPearce is your Nano on air or water?
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post #784 of 1788
Thread Starter 
Quote:
Originally Posted by JonathanQC30 View Post

sweet biggrin.gif

mvddc 1.356

1190/572 +30mv on the vddc
Warning: Spoiler! (Click to show)
Quote:
Originally Posted by JonathanQC30 View Post

increasing hbm speeds gives more than the gpu overclock... so yes smile.gif i think i win like 5 ish % with my 500@570 overclock, and around 3-3.1% from 1050@1180-90 overclock, i wonder why the overclock doesn't give much result on that card wink.gif

GPU clock OC tends to scale % gain in clock = % gain performance, so 1190 is ~+13% over stock 1050. If you're not getting that scaling I'd say your experiencing negative performance scaling with your OC. Test by lowering your OC and see if you gain a better scaling result.

HBM clock tends to scale % gain in clock = 0.3% gain in performance in my testing, yours is same. 572 is +14.4% over stock and you gained 5% performance (14.4 x 0.3 = 4.32).
Quote:
Originally Posted by JonathanQC30 View Post

i gone from 16724 in 3dmark 11 to 18091 : 8.1% increase

Don't use the total score (as long as CPU clock, etc is same) use the "Graphics Score" as an indicator.





3DM11 compare link.

So 1190 - 1135 = 55 , (55 / 1135) x 100 = 4.8% theoretical performance gain. 572 - 535 = 37, (37 / 535) x 100 = 6.9% resulting in ~2% theoretical performance gain. Total gain over my OC should be ~6.8%, which I can't see in GPU based tests.

Do you have a 3DM FS score for your OC?
Edited by gupsterg - 6/1/16 at 12:32am
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post #785 of 1788
Quote:
Originally Posted by gupsterg View Post


GPU clock OC tends to scale % gain in clock = % gain performance, so 1190 is ~+13% over stock 1050. If you're not getting that scaling I'd say your experiencing negative performance scaling with your OC. Test by lowering your OC and see if you gain a better scaling result.

HBM clock tends to scale % gain in clock = 0.3% gain in performance in my testing, yours is same. 572 is +14.4% over stock and you gained 5% performance (14.4 x 0.3 = 4.32).
Don't use the total score (as long as CPU clock, etc is same) use the "Graphics Score" as an indicator.





3DM11 compare link.

So 1190 - 1135 = 55 , (55 / 1135) x 100 = 4.8% theoretical performance gain. 572 - 535 = 37, (37 / 535) x 100 = 6.9% resulting in ~2% theoretical performance gain. Total gain over my OC should be ~6.8%, which I can't see in GPU based tests.

Do you have a 3DM FS score for your OC?

i will update my score and send you, i mainly use 3dmark 11, ill send today smile.gif
post #786 of 1788
@gupsterg

So I am wondering if HBM can negatively scale as well. I managed to get stable at 625 of HBM with a 50mv offset but I am not seeing the performance increases. So either HBM will negatively scale with voltage or the newest drivers are to blame.
post #787 of 1788
Quote:
Originally Posted by shadowxaero View Post

@gupsterg

So I am wondering if HBM can negatively scale as well. I managed to get stable at 625 of HBM with a 50mv offset but I am not seeing the performance increases. So either HBM will negatively scale with voltage or the newest drivers are to blame.

you manage that with a mvddc of 1.35? i cannot go over 572... are you having a custom water block? voltage settings got a lot to do with the performance, as soon i pass 1.25 on the gpu, i get bad results...
post #788 of 1788
Thread Starter 
@shadowxaero

Dunno about drivers, for me when I tested 16.4.1 crimson they benched lower than 16.3.2 WHQL so stuck with them as not having an issue in games, etc I use. Yet to be bothered to test 16.5.x .

I'd think 2 aspects come into play with increased HBM clock.

i) RAM having errors as can't do the frequency.

ii) Memory controllers can't handle increased frequency of HBM (8 x 512-bit memory controllers, 2 per HBM stack).

Both of above I'd say is and/or situation.

Mumak (author of HWiNFO) recently enabled EDC counter for Hawaii and below AMD GPUs. Now members are seeing that Hawaii MC can't handle as high a RAM OC error free as they can attain artifact free. Mumak has tested EDC counter on Fiji but causes BSOD, perhaps he will suss it in future release.

See this post on EDC by The Stilt in the context of Hawaii/Grenada.
Edited by gupsterg - 6/1/16 at 9:46am
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post #789 of 1788
Yea I can do 570 on stock voltage with no artifacting.

And I have an ekwb block.

I think I will try an offset of 25mv and a clock of 600 and see how that effects performance. This is a FuryTriX btw. I star negatively scaling with a core voltage around 1.63v.
post #790 of 1788
Quote:
Originally Posted by gupsterg View Post

@shadowxaero

Dunno about drivers, for me when I tested 16.4.1 crimson they benched lower than 16.3.2 WHQL so stuck with them as not having an issue in games, etc I use. Yet to be bothered to test 16.5.x .

I'd think 2 aspects come into play with increased HBM clock.

i) RAM having errors as can't do the frequency.

ii) Memory controllers can't handle increased frequency of HBM (8 x 512-bit memory controllers, 2 per HBM stack).

Both of above I'd say is and/or situation.

Mumak (author of HWiNFO) recently enabled EDC counter for Hawaii and below AMD GPUs. Now members are seeing that Hawaii MC can't handle as high a RAM OC error free as they can attain artifact free. Mumak has tested EDC counter on Fiji but causes BSOD, perhaps he will suss it in future release.

Is GPUPI a good tool to test RAM errors within GPU's as I was able to get passed that error free?
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