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[Official] Polaris Owners Club - Page 44

post #431 of 4340
Here's stock settings on my 480 as people always like to see if their oc makes it up to the stock performance of another card. (People wonder if their nerd quotient gave them the performance of another card purchased by a non-nerd.)

Unigine Valley Benchmark 1.0

FPS:
52.7
Score:
2204
Min FPS:
28.4
Max FPS:
100.9


@GecKoTDF


Thats WAY WAY more voltage than I need for 1435. I do 1435 at 1.22....

edit: That's the voltage that first smoked my motherboard in 3dmark stress loop.. be careful. i was at 1470 at your voltage.
post #432 of 4340
Quote:
Originally Posted by greytoad View Post

Here's stock settings on my 480 as people always like to see if their oc makes it up to the stock performance of another card. (People wonder if their nerd quotient gave them the performance of another card purchased by a non-nerd.)

Unigine Valley Benchmark 1.0

FPS:
52.7
Score:
2204
Min FPS:
28.4
Max FPS:
100.9


@GecKoTDF


Thats WAY WAY more voltage than I need for 1435. I do 1435 at 1.22....

edit: That's the voltage that first smoked my motherboard in 3dmark stress loop.. be careful. i was at 1470 at your voltage.

Going to try, but i can't get stability with that voltage... or may be... i generated using to much voltage biggrin.gif let's try again.-
Edited by GecKoTDF - 8/10/16 at 8:42pm
post #433 of 4340
I have a Sapphire RX 470 Nitro+ OC (got it today) - 1260Mhz, 4GB 7Ghz RAM

In its stock configuration the thing is a real power hog - using almost as much as my R9 290 at 940Mhz (reference clock) without always performing any better.
Code:

TessMark - (set 4, insane, 1080p fullscreen, 8x AA, no post FX)

GPU      - SCORE - POWER

R9 290:  - 5372 - 312W
RX 470:  - 6516 - 300W

--

Heaven - x64 Tess (1080p, all maxed)

R9 290:  - 1390 - 300W
RX 470:  - 1521 - 294W

--

Heaven - No Tess (1080p, all else maxed)

R9 290:  - 2260 - 312W
RX 470:  - 2203 - 300W

--

Valley - Extreme HD

R9 290:  - 2336 - 330W
RX 470:  - 1976 - 300W

--

GPU      - AVG - POWER

Hitman - DX12, 1080p fullscreen, FXAA, 4x anis, all else maxed.

R9 290:  - 66.5 - 368W
RX 470:  - 58.0 - 354W

--

Battlefield 4 - DX11 1080 - Ultra

R9 290:  - 100.0 - 380W
RX 470:  - 102.4 - 372W



I thought these results were terrible, as you might imagine. So I did some checking on the RX 470 for its power draw behavior at different frequencies:



This is the system power usage delta over idle (120W). Notice anything funny?

For reference, here's the R9 290 in the exact same system, exact same setup:



Clearly something artificial was going on (and the card throttled at 1275Mhz, despite a +50% power limit and 100% fan speed (~65C temps)).

Long story short, the default BIOS (the OC BIOS) sets a GPU voltage of 1168mv. Can you guess when that kicks in? Yup.

So, I undervolted the card. A lot. By 150mv. The card is perfectly stable (been testing it all day) at 1025mv at 1250Mhz. And the power draw is an entirely different story.



R9 290 vs RX 470 (both properly configured for optimal efficiency at each frequency):



We can only go as far as the R9 290 will go before throttling, so it stops at 1150Mhz. The RX 470 only pulls 210W at 1250Mhz under Furmark when not being allowed to throttle.

--

On a side note, the RX 470 is definitely not memory bandwidth starved. I can't find a single benchmark that shows gains with increasing memory clocks - and I clocked in 50Mhz steps all of the way to 2100Mhz. Power usage went up slightly, and minimums went up slightly (~1FPS), but that was about it.

Also, Power Efficiency mode is quite nice, IMHO, when you have the card configured to also not throttle (so you don't get stuck in lower frequencies while gaming).

At 1150Mhz, in TessMark, RX 470 is 2.45x more efficient than R9 290. In Heaven, with x64 tessellation, it is 2.5x more efficient. With my under-volting on both cards - both in their best light.
post #434 of 4340
I did a double take until I read over system idle. lol Visions of fried motherboards danced in my head. great work.
post #435 of 4340
Quote:
Originally Posted by greytoad View Post

I did a double take until I read over system idle. lol Visions of fried motherboards danced in my head. great work.

Thanks! My system has a relatively high idle power due to 8 fans, 5SSDs, 2 ODDs, 3HDDs, 2 hot swap bays, and both of my monitors all being protected and monitored by my UPS (which I use for my power monitoring).
post #436 of 4340
@greytoad - You where right i try with 1.222 volts in GPU Tweak and go ok but.. if i put 1.255v crash in the combined test f 3d Marks with 1.222 the max un gpuz its 1.25volts if i put 1.25 its 1.30, but its extrange why fail with 1.255 and not with 1.222v or 1.311v if its more higher, probably a power draw issue ?
post #437 of 4340
Thread Starter 
Quote:
Originally Posted by GecKoTDF View Post

@greytoad - You where right i try with 1.222 volts in GPU Tweak and go ok but.. if i put 1.255v crash in the combined test f 3d Marks with 1.222 the max un gpuz its 1.25volts if i put 1.25 its 1.30, but its extrange why fail with 1.255 and not with 1.222v or 1.311v if its more higher, probably a power draw issue ?

Higher voltage doesn't guarantee stability, sometimes you can't get higher clocks past a certain point without extreme voltages.

I.e my 270x does 1350mhz @ 1.3v but most don't go past 1200-1250mhz.
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post #438 of 4340
Ok, in Valley I have to back down to 1300mhz/1.110v to eliminate most of the throttling if I disable AA. It bumps into the 180w power limit more often without AA. I suppose its shifting the load from the ROPs to the shaders which draw more power.

Also, the fan ramp up time in wattman is atrociously slow. I end up throttling hard for about 1-2m while wattman ever so slowly ramps up the fan RPM. After that clocks shoot up to max and stay there.

Using the same settings as Bit-Tech, I score about 50% of a GTX 1070 Strix in Valley. 3409 VS. 6613.
Edited by KarathKasun - 8/10/16 at 9:13pm
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post #439 of 4340
Quote:
Originally Posted by Echoa View Post

Higher voltage doesn't guarantee stability, sometimes you can't get higher clocks past a certain point without extreme voltages.

I.e my 270x does 1350mhz @ 1.3v but most don't go past 1200-1250mhz.

Well get the answer, in the GPU Tweak II i put "1325" voltage, its 1.325V in theory but... in the practice when i run Unigine, 3d Marks, the voltage its not at 1.325 its at 1.25/1.26 so its a drop of 0.100mv - Thats more normal to get stability with 1430 mhz of course some people can get it with 1.22v others with 1.25v every pc, motherboard and GPU its a world, probably its a voltage drop or a mistake of the GPU Tweak II.-
post #440 of 4340
Quote:
Originally Posted by greytoad View Post

I guess average temp after a couple of hours in the same closed room playing fallout 4 at 1430 1.22 was 35. fallout4 power usage looks spiky in gpuz high was 206watt low is mid double digits. most time spent near low.

Your exuberant amount of radiator cooling capacity is undoubtedly contributing to such Quacktastic temperatures. 10x120, judging by pics, for single CPU/GPU is more than the norm biggrin.gif

If you have nickel block should try some CLU to see how much further you can get them down smile.gif
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