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HD7950 revised with reference HD7970 PCB club - Page 3

post #21 of 847
Also, I'm getting 1075/1575 @ stock voltage with temps around 67C...
EDIT: just ran GPU Tool, and getting around 62C with fans at about 75-80%... Really loud though lol.
Edited by tw23 - 7/22/12 at 1:31pm
post #22 of 847
Hmm... just changed my fan setup now.
Here it is:
front - 140mm - intake
side - 200mm - intake
bottom - 120mm - intake
top - 2x120mm - exhaust/outtake
rear/back - 120mm - exhaust/outtake

Seems to get better temperatures smile.gif .
post #23 of 847
i have the 7950 oc 900 core

who can i flash it to the 950 core bios
post #24 of 847
i tray it it dos but it say mismatch or somthing

any help
post #25 of 847
Quote:
Originally Posted by SonDa5 View Post

Quote:
Originally Posted by DerComissar View Post

Thanks for providing the bios, a Rep+ for that:thumb:

I flashed mine with the "Sapper" bios yesterday. So far, it's working great, totally stable. I'm gradually testing it for stability, and any differences from the stock 7950 bios VisionTek uses.
Maximum clock testing will come soon, I could run 1200 with the stock bios and a voltage boost to 1.250, I wasn't pushing the ram much, at about 1450.
What I do find interesting, is that I can run it about 100MHz higher on stock voltage than I could before.
1000/1450 at stock voltage was fine with the original bios, anything much higher needed more juice.
It's now doing 1100/1450 with no increase in voltage, and I've done a fair bit of stress-testing and gaming with those clocks.

Your welcome. Good to see the BIOS is working out for your card. I've tried many different HD7950 BIOS for my card and this newest Sapphire HD7950 950mhz edition BIOS is the most stable I have tried. Also it is very new from May of 2012. It isn't the same BIOS that was shipped with my card. I got this BIOS direct from Sapphire customer support after requesting the newest BIOS for my card.
That's good to know, that it's been very stable for your card. And a very recent version as well. It's fine at 1200 on my card, at about 1.2v. But I don't want to push any more into it while it's on air cooling.


Quote:
Originally Posted by SonDa5 View Post

Some performance results under load.
Ambient temperature 23.6C
1300/1600 with under 1.2v.
Over 2 hours of looping Heaven. Stable.
Ambient Temp 25C.
Can go faster.

http://3dmark.com/3dm11/3614346
You can't beat good watercooling. Your results speak for themselves. 1300MHz, with ridiculously low load temperatures, even on Furmark.
Very good 3DMark score too.

I have a Swiftech 7950 unisink on mine, which would be a perfect compliment to their MCW-82 gpu block.
Along with the rest of the parts, of course:rolleyes:
Edited by DerComissar - 7/22/12 at 6:05pm
    
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post #26 of 847
I have the MSI TF3 R7950, and I'm wondering if I should flash to the HD 7950 950MHz bios. Will that increase my stability?

Thanks wink.gif .
-tw23
post #27 of 847
Quote:
Originally Posted by tw23 View Post

Hmm... just changed my fan setup now.
Here it is:
front - 140mm - intake
side - 200mm - intake
bottom - 120mm - intake
top - 2x120mm - exhaust/outtake
rear/back - 120mm - exhaust/outtake
Seems to get better temperatures smile.gif .

Yeah thats the best setup. front,side,bottom - intake . top 2 and rear outtake. So what are your temps now. Are you able to run1150 Mhz and keep temps below 75c with fan speeds around 60%.
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post #28 of 847
Quote:
Originally Posted by raghu78 View Post

Yeah thats the best setup. front,side,bottom - intake . top 2 and rear outtake. So what are your temps now. Are you able to run1150 Mhz and keep temps below 75c with fan speeds around 60%.
Maybe... Will 80% ruin my GPU? I don't really care about loudness as long as my GPU will last a good time, ya know wink.gif ?

Thanks thumb.gif .
-tw23
post #29 of 847
Quote:
Originally Posted by tw23 View Post

Maybe... Will 80% ruin my GPU? I don't really care about loudness as long as my GPU will last a good time, ya know wink.gif ?
Thanks thumb.gif .
-tw23

No 80c won't harm your GPU. Its just in the interest of keeping overall ambient temps lower. Excessive heat and dust are two reasons which reduce component life. Also whats the temps like now and at what clocks/voltage .

Edit :

http://www.overclock.net/t/1285175/7950-what-are-your-overclocks#post_17766565

Are you running 1160 Mhz at 1.1v with 80% fan speed and 62c under load ??? What did you test stability with . BF3, Unigine Heaven 3.0 are good stability testers
Edited by raghu78 - 7/22/12 at 9:46pm
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post #30 of 847
Thread Starter 
Quote:
Originally Posted by mltms View Post

i tray it it dos but it say mismatch or somthing
any help


What brand and model of video card do you have?
B.K.T.
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