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7950GT - Help and Overclocking

post #1 of 25
Thread Starter 
So, my eVGA 7950GT 512MB KO w/ Zalman cooler arrived yesterday, it's in and set up

It doesn't like Aquamark 3 or 3DMark 01 (gives me low scores) but so what

I've been using 3DMark 05 and have started overclocking already

My scores:

3379: AMD 3000+ @ 1800mhz + 6600GT [stock, 500/500]

7946: AMD 3700+ @ 2200mhz + 7950GT [578/722]

8755: AMD 3700+ @ 2500mhz (250x10) + 7950GT [578/722]

8968: AMD 3700+ @ 2500mhz (250x10) + 7950GT [637/702] - don't ask me how I got 637mhz core

9039: AMD 3700+ @ 2500mhz (250x10) + 7950GT [604/801]

All those speeds (apart from the 637mhz, don't have a clue what happened there) are stable (i.e. 10 mins+ in ATiTool)

Looking good?
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post #2 of 25
Looking Good!
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post #3 of 25
Sweet
post #4 of 25
Most of your OC is from overclocking the CPU. Sounds like that card has a long way to go yet.
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post #5 of 25
Thread Starter 
Hehe, I'm not sure TBH - I've pretty much maxxed out the core and memory, got a few more MHZs left

OK, new result:

9321: AMD 3700+ @ 2750mhz (250 x 11) + 7950GT [597/805] - Futuremark reads it as 617mhz core though

http://service.futuremark.com/compare?3dm05=3051286
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post #6 of 25
The 7950GT can reach the 700 mhz in core and more.When i volt mod mine was 700+,that card is great to volt mod and oc.
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post #7 of 25
Yes. Volt-mod your card. The VF-900 (which your Fatality is a variant of [by colour though, nothing else]) cools VERY well, so go for the max volt mod (if the 7905 is anything like my 7900GT, 1.55V is the max).
post #8 of 25
Here is mine.Now rest in my son rig.
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post #9 of 25
Quote:
Originally Posted by prosser13 View Post

9321: AMD 3700+ @ 2750mhz (250 x 11) + 7950GT [597/805] - Futuremark reads it as 617mhz core though

http://service.futuremark.com/compare?3dm05=3051286
Futuremark reads the geometric core speed for some reason. SO your card apparently has a delta of +20, which is the difference between the geometric domain and shader domain.

On my 7900GS, that was the default as well. However, I found that my geometric could stably operate with a +60 delta (can be change in the bios). Helps performance marginally, but mostly performance is determined by the shader domain speed.

Don't worry about it though.
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post #10 of 25
Thread Starter 
Interesting Might explain the "637mhz" core

And how do I do the voltmod?
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