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[Official] AMD Radeon HD 7950/7970/7990 Owners Thread - Page 60

post #591 of 38704
Quote:
Originally Posted by snelan View Post

Hmm, I always assumed that since I am seeing so much VDroop under AB, that it just wasn't increasing the voltage. Does that mean that it IS actually increasing the voltage?

Also, what exactly is the advantage of disabling PowerTune?

Disabling powertune removes the default TDP of the card, allowing more current to run through it for higher overclocks.
If the TDP is reached, then the card downclocks to stay at that TDP. +20% is the max u can go.
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post #592 of 38704
Sigh, re-installed Windows and the stuttering in BF3 seems worse. Running 100FPS on these cards seems like 40.
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post #593 of 38704
has anyone used the ASUS GPU Tweak ? does it let you use more then 1.3v ? i got a Sapphire and highest i got it stable is 1230/1790 is the max it lets me oc the mem tongue.gif
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post #594 of 38704
Quote:
Originally Posted by snelan View Post

Hmm, I always assumed that since I am seeing so much VDroop under AB, that it just wasn't increasing the voltage. Does that mean that it IS actually increasing the voltage?

Also, what exactly is the advantage of disabling PowerTune?

It does. When I increase the voltage in AB, I see it spikes almost to the value set (let's say 1.2v) when under load, but then gradually decreases and starts fluctuating (like 1.14, 1.05, 1.12 etc.) But average values are still higher, compared to values reported on default voltage.
post #595 of 38704
With all this artifact talk and being temp sensitive, why doesn't someone get some VRM temps! If those are getting warm then they are probably causing the core to get unstable. GPUZ 0.5.3 gives vrm temps on my 5850, but the newest 0.5.7 does not. If the VRM's turn out being the fault here, that would make perfect sense why full cover blocks are having such great success.
post #596 of 38704
I love benchmarking as much as the next guy but after messing around last night and getting a few weird errors (like when I would scroll my Chrome window with OCN in it I would get a flickering in my taskbar) I realized that for my single monitor, 1440 set up 1050 on stock volts with the fan around 40-45% is more than enough for me.

I love seeing the benchies so keep em coming, but for now I am just happy with the ability to use the 3GB on some beastly AA. I was messing around in a few games last night and has VRAM usage of 1.8-2GB on a few games I wouldnt have expected it.
post #597 of 38704
Card is still at half frame rate tried restarts reinstalling drivers and also system restore. Really don't want to reinstall windows frown.gif
 
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post #598 of 38704
Quote:
Originally Posted by UNOE View Post

Card is still at half frame rate tried restarts reinstalling drivers and also system restore. Really don't want to reinstall windows frown.gif

Are you using afterburner by any chance?

When i use afterburner with this card my frames drop quite a bit for some reason. So i had to swap over to Trixx frown.gif
post #599 of 38704
Crossfire is indeed bottlenecked by a 1090T.

I re-ran the AvP benchmark thru again, and where I got this with Crossfire...
Code:
1920 x 1200/Very High/High/16/SSAO On/TS On/AS On/0X
Used AvP_D3D11_Benchmark.exe
Number of frames: 11831
Average Frame Time: 8.9ms
Average FPS: 112.9

===========================================
1920 x 1200/Very High/High/16/SSAO On/TS On/AS On/4X
Used AvP_D3D11_Benchmark.exe

Number of frames: 8342
Average Frame Time: 12.6ms
Average FPS: 79.6

===========================================

I got this with single card...
Code:
1920 x 1200/Very High/High/16/SSAO On/TS On/AS On/0X
Used AvP_D3D11_Benchmark.exe
Number of frames: 11831
Average Frame Time: 8.9ms
Average FPS: 94.7

===========================================
1920 x 1200/Very High/High/16/SSAO On/TS On/AS On/4X
Used AvP_D3D11_Benchmark.exe

Number of frames: 8342
Average Frame Time: 12.6ms
Average FPS: 59.8

===========================================


Also, I started to notice microstuttering more on these than the 6950CF I had previously.
At my res (1200p), I can still run single card 7970 better than before, with the benefit of extra RAM for AA, cooler, quieter, and better power consumption. Second card has gone back to the store.
post #600 of 38704
Anyone else having massive VRAM usage? I'm getting a constant 3GB.

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