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[Official] AMD Radeon HD 7950/7970/7990 Owners Thread - Page 1233

post #12321 of 38704
Quote:
Originally Posted by SonDa5 View Post

I thought they were cherry picked for low ASIC based on the ASIC score rating.
My MSI TF3 PE/OC GTX 560 ti 448 was scored in the 70s on the ASIC scoring yet could clock to 1GHZ on air with stock voltage. I don't put alot of trust in the accuracy of the ASIC score program used in GPU-Z. DOesn't really seem to be accurate of real gpu performance.

Well as has been said before, asic quality is only one factor. In no way should it be taken as an determination of how well your chip will overclock. It is still all about the silicon lottery. Gpu-z correctly reports asic % as it is programed into the chip itself once the leakage is determined at the foundry (it is how programs and ccc itself can know what voltage to send to the chip).

What asic % helps us with is knowing how much voltage (thus heat and power) a chip will produce. For air users, a higher asic can mean lower heat and thus possibly a higher overclock than a lower asic % with higher voltage. As you said, you had low asic and high clocks, so it is not always the case.

Cherry picking gpus doesn't make much sense only because it is difficult to test every chip by pushing it to its limits. By merely setting a clock level at stock volts,you can effectively skim more chips quicker and with much more consistency. AIBs don't like changing voltages if they don't have to, it just becomes messy.
     
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post #12322 of 38704
Quote:
Originally Posted by phillyd View Post

good thought, my VRM temps are 46C though. The issue is that that there are 4 screws that go through the backplate and one of the standoffs broke off. shown here
i can tighten the others but over time it starts to separate.
450

That back plate is awesome. Did it come with your card or did you buy it separately?
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post #12323 of 38704
Quote:
Originally Posted by SonDa5 View Post

I thought they were cherry picked for low ASIC based on the ASIC score rating.
My MSI TF3 PE/OC GTX 560 ti 448 was scored in the 70s on the ASIC scoring yet could clock to 1GHZ on air with stock voltage. I don't put alot of trust in the accuracy of the ASIC score program used in GPU-Z. DOesn't really seem to be accurate of real gpu performance.
That is reason why it managed 1 GHz on stock volts, lower ASIC means higher speed on air with stock volts, there is some true in that ASIC.
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post #12324 of 38704
Quote:
Originally Posted by sena View Post

That is reason why it managed 1 GHz on stock volts, lower ASIC means higher speed on air with stock volts, there is some true in that ASIC.

I thought it was opposite.
High ASIC, good mhz on stock - low volts, does not like extra volts so much.
LOW ASIC, You will need to overvolt to get extra mhz, great for water.
post #12325 of 38704
Quote:
Originally Posted by Newbie2009 View Post

I thought it was opposite.
High ASIC, good mhz on stock - low volts, does not like extra volts so much.
LOW ASIC, You will need to overvolt to get extra mhz, great for water.
Hmm
My card for example has the ASIC 77.9%, max i can get on stock volts is 955 MHz (900stock altrough this is factory OC, the stock for HD 7950 is 800 ), one guy here bought the same card like me, and he has ASIC of about 60%, and hi hitted 1100 on stock volts. Also i saw more examples here, cards with lower ASIC are hitting higher speed on stock volts than cards with higher ASIC, maybe its just coincidence.
Altrough my card stock volts is just 0.993V.
Edited by sena - 6/21/12 at 2:51am
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post #12326 of 38704
Quote:
Originally Posted by sena View Post

Hmm
My card for example has the ASIC 77.9%, max i can get on stock volts is 955 MHz (900 is stock), one guy here bought the same card like me, and he has ASIC of about 60%, and hi hitted 1100 on stock volts. Also i saw more examples here, cards with lower ASIC are hitting higher speed on stock volts than cards with higher ASIC, maybe its just coincidence.
Altrough my card stock volts is just 0.993V.

mmm, mine are 70% and 72%. Can do about 1025 on stock volts (very low in comparison to most) can hit 1350/1325 with lots of volts.

Think it's safe to say, ASIC is only a part of what the card can do overclocking wise.
post #12327 of 38704
Just got my XFX 7950.

This card is a HUGE upgrade from my sli GTX 260's.

It is absolutely destroying everything that i am tossing at it. Only play at 1920 x 1200 though.

Games are so smooth and the Catalyst Control center is much easier to navigate than Nvidias settings.

Think i might be an ATI fanboy in the making here.

Ill post pics when i can.
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post #12328 of 38704
Quote:
Originally Posted by Ksireaper View Post

Just got my XFX 7950.
This card is a HUGE upgrade from my sli GTX 260's.
It is absolutely destroying everything that i am tossing at it. Only play at 1920 x 1200 though.
Games are so smooth and the Catalyst Control center is much easier to navigate than Nvidias settings.
Think i might be an ATI fanboy in the making here.
Ill post pics when i can.

If you overclock can you post max clock speeds at stock voltage and with voltage OC. also temps at idle and in game would be good. thumb.gif
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post #12329 of 38704
Quote:
Originally Posted by Ksireaper View Post

Just got my XFX 7950.
This card is a HUGE upgrade from my sli GTX 260's.
It is absolutely destroying everything that i am tossing at it. Only play at 1920 x 1200 though.
Games are so smooth and the Catalyst Control center is much easier to navigate than Nvidias settings.
Think i might be an ATI fanboy in the making here.
Ill post pics when i can.

Sounds great. Get some images for us!
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post #12330 of 38704
:faceplam: did any of u even read the first post on this page? Lol to ur responces
     
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