Radeon 7950 3DMark11 Scores

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btadler

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Jul 30, 2009
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I recently got the Sapphire Radeon 7950 Vapor X with comes with a fancy little button you can push to instantly overclock your GPU from clock speed of 850MHz to 950MHz. Ran a 3DMark test at 950MHz and got. For my CPU I have an i5 3570K which I have clocked to 4.4MHz

Graphics Score 8039
Physics Score 7222
Combined Score 7325

Overclocked the card manually to Core 1100MHz, memory 1450MHz, Voltage 1200mV, Power +20 and got

Graphics Score 10108
Physics Score 7243
Combined Score 7225

Is it strange that my combined score went down with the overclock verse "stock" configuration?
 
Termie

Termie

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Aug 17, 2005
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btadler said:
I recently got the Sapphire Radeon 7950 Vapor X with comes with a fancy little button you can push to instantly overclock your GPU from clock speed of 850MHz to 950MHz. Ran a 3DMark test at 950MHz and got. For my CPU I have an i5 3570K which I have clocked to 4.4MHz

Graphics Score 8039
Physics Score 7222
Combined Score 7325

Overclocked the card manually to Core 1100MHz, memory 1450MHz, Voltage 1200mV, Power +20 and got

Graphics Score 10108
Physics Score 7243
Combined Score 7225

Is it strange that my combined score went down with the overclock verse "stock" configuration?
Click to expand...

Yes, it is strange. The Combined Score is a separate test from either the Graphics Score or Physics Score tests, so in theory in can move in a different direction, but in practice, since you have a clearly higher Graphics Score and a Physics Score that shows no significant deviation, the Combined Score should at least be the same, if not higher.

To be sure that your overclock isn't throttling during the combined test, which could lead to this result, run MSI Afterburner in the background to graph GPU clocks and usage.
 
Termie

Termie

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btadler said:
http://img202.imageshack.us/img202/1411/3dmark11z.jpg

That's a screenshot of my scores and MSI Afterburner. Looks pretty consistent to me but maybe I'm missing something.

And no I have not.
Click to expand...

Something is a bit odd. The Combined test does not tax the GPU fully, but it shouldn't be CPU-bottlenecked either, yet your GPU Usage is quite low. For some reason, your card is not being fully utilized. Here's a run I did in 3DMark11 last year:

capturextv.jpg


You can see that the 6th peak, which is the Combined test, GPU Usage is almost as high as the peaks in tests 1-4 (the Graphics tests).

Maybe run 3DMark Fire Strike to try another test.
 
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Termie

Termie

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btadler said:
Wow Firestrike destroys my computer.

Standard benchmark:
http://img607.imageshack.us/img607/8127/3dmarktest2.png

On Extreme setting I got a score of 3421

Graphics: 3567 Physics: 8232 Combined: 1568
Click to expand...

Nothing wrong with that Standard benchmark score - your Combined Score is quite high, exactly as it should be, and in fact beats my OC'd 3770/670 pretty easily, proving that you're not CPU-bottlenecked. Looks like everything is working fine, so the 3DMark11 score was just a fluke.
 
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Rikard

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Apr 25, 2012
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I have the same card and I recently made a thread here about some really weird behaviour of the core voltage as a function of the power limit. I concluded that the bios that I loaded by the OC button is wonky, and that the voltage was performing as expected if I OC'ed the standard bios (OC button LED not lit). Could you please use the same OC setting on the standard bios as you just tested with the OC bios and see if anything changes for you too?
 
Termie

Termie

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Rikard said:
I have the same card and I recently made a thread here about some really weird behaviour of the core voltage as a function of the power limit. I concluded that the bios that I loaded by the OC button is wonky, and that the voltage was performing as expected if I OC'ed the standard bios (OC button LED not lit). Could you please use the same OC setting on the standard bios as you just tested with the OC bios and see if anything changes for you too?
Click to expand...

But his GPU usage drops significantly while clocks remain the same. If voltage were actually dropping during 3DMark Combined, you'd see the clocks drop too, wouldn't you?
 
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Rikard

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Apr 25, 2012
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Termie said:
But his GPU usage drops significantly while clocks remain the same. If voltage were actually dropping during 3DMark Combined, you'd see the clocks drop too, wouldn't you?
Click to expand...
I really don't know what to expect due to that in my case the core voltage was not jumping to correct values etc with the OC bios (made by Sapphire I assume), which was not the case with the normal bios (made by AMD?). It is easier for the OP just to test it than you and me using the crystal balls.
 
Termie

Termie

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Rikard said:
I really don't know what to expect due to that in my case the core voltage was not jumping to correct values etc with the OC bios (made by Sapphire I assume), which was not the case with the normal bios (made by AMD?). It is easier for the OP just to test it than you and me using the crystal balls.
Click to expand...

You've definitely given him a good idea - I just thought I'd do a little hypothesizing ahead of time. I could certainly be wrong! ;)

But to be clear, his card is providing excellent performance in 3DMark Fire Strike, so if it is a VGA BIOS problem, it's not affecting the card in all situations.
 
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btadler

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ill check it tomorrow. check back then.

Just to make sure I understand what is going on with your card. When you have the built in OC button pushed in your additional OC is stable? and when it is not pushed in at the same clock speed it is unstable? Thanks for the clarification.
 
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zaydq

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Jul 8, 2012
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What psu are you using? I wouldn't be surprised if your system is drawing too much power in the combined test and the pau may be struggling.
 
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zaydq

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Jul 8, 2012
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Yeah sounds unlkkely. Try adjusting clocks on either the cpu or gpu to see if theres any instability
 
R

Rikard

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Apr 25, 2012
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btadler said:
ill check it tomorrow. check back then.

Just to make sure I understand what is going on with your card. When you have the built in OC button pushed in your additional OC is stable? and when it is not pushed in at the same clock speed it is unstable? Thanks for the clarification.
Click to expand...

Sorry for the late reply, I was AFK. In the thread I was talking about I described the situation I was having. With the OC button pushed in (LED lit up) I can get 1175 MHz on the core without increasing the voltage, but if I do increase the voltage I get into the strange relation between core voltage jumps and power tune.

This seemed not right to me, so when I tried the other bios that the card came shipped with by pushing the OC button again (LED not lit) I got the standard 850 MHz on the core. However using this bios the core voltage takes the values that it is assigned and there is no strange interplay with the power tune. I was doing 1230 MHz with 1.15 V on the core on that setup (but I did not stress test it very long) and all graphs looked nice and pretty. (Well with the exception that my core temp exceeded 60 C, that never happened before!)

This makes me believe that the OC bios is buggy, at least when it comes to voltage settings, and I rather use the standard AMD bios and set OC profiles that I trigger by application detection in RadeonPro or Afterburner, or switch manually in Trixx for that extra umph. I am not saying that this is your problem, but since I have reason to doubt the bios you are using, please try the other one that is included with the card.
 
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