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Radeon HD 6950 overclocking?

post #1 of 7
Thread Starter 
No I'm not interested in the BIOS flash to 6970 everyone is talking about. I just want to overclock my gpu. Haven't ever had trouble with any card letting me do this.

Powerstrip won't let me change the gpu speed.
Rivatuner won't even detect anything about it.
AMD Overdrive won't detect anything about it.
ATI Catalyst under it's Overdrive section let's me change a bit. The problem with this is that I can't change the clock speed past 840mhz when its original is 800.

Is this really all I can change? It handles 840mhz with no trouble. I want to go higher and there's no reason I shouldn't be able to.
Though in Catalyst even when I have something 3D running it says it's "currently at" 500mhz. I suspect the stupid Power control thing it has onboard is the cause of that.
It will handle any game I've thrown at it on highest settings. Yay Starcraft 2 on Extreme. But I'm not a huge PC gamer to be honest. I wanted it more for emulation.
So while God of War is running on the ps2 emulator in the next screen, Catalyst seems convinced the card should run at 500mhz and ruin game performance for me. Videos of people with much worse computers than I are running at much higher framerates.

I swear to God, if no one can help me, I'll take it back and get a Nvidia. Never had trouble with them at all.

My specs if it matters (I know people love to ask for specs):
AMD Quadcore at 2.8ghz
4gb ram
STUPID RADEON HD 6950 (formerly Geforce 9500 GT)

I love the performance on pc games. Flawless performance on many games. Arkham Asylum and Crysis like a champ. But if it takes a Nvidia to happily overclock and happily emulate, Nvidia it will have to be. Thanks in advance.
post #2 of 7
Quote:
Originally Posted by mtear;12108018 
No I'm not interested in the BIOS flash to 6970 everyone is talking about.
Why not? 6970 performance at a 6950 price.
If you weren't interested in performance, why upgrade.. confused.gif
Quote:
But if it takes a Nvidia to happily overclock and happily emulate, Nvidia it will have to be. Thanks in advance.
Try not to blame the brand for PEBKAC issues.

I don't remember if there is a difference between 6970 or 6950 as far as max CCC limited clocks go, but MSI Afterbuner lets me pump my GPU over 900. Of which it seems stable to around 930 or so on stock voltage.
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post #3 of 7
Quote:
Originally Posted by beers;12108128 
Why not? 6970 performance at a 6950 price.
If you weren't interested in performance, why upgrade.. confused.gif


Try not to blame the brand for PEBKAC issues.

I don't remember if there is a difference between 6970 or 6950 as far as max CCC limited clocks go, but MSI Afterbuner lets me pump my GPU over 900. Of which it seems stable to around 930 or so on stock voltage.

Flashing to a 6970 BIOS can actually ruin a 6950. The reason being, the 6950 has different memory chips. The 6970's chips run at a higher voltage and freqeuncy, which can essentially ruin the chips on a 6950 when flashed. That being said, a shader unlock is practically risk free and it can provide more performance for a stock 6950.

BTW, the new Afterburner beta supports 6900 series cards and allows voltage/frequency modulation.
post #4 of 7
Thread Starter 
Just installed Afterburner. Says max GPU speed is 840. Is it cause I got a Diamond Radeon HD 6950? Is Diamond just awful?

And in regards to the BIOS unlock, I don't want to chance ruining it. Just want to overclock the old fashioned way then consider it. What could be causing the cap on speed?

BTW: I tested God of War again. GPU load hovered between ZERO and TWENTY percent while playing. Did it just decide to take a nap and not render fast enough? CPU load hovered at 50%.
post #5 of 7
try the latest beta of Afterburner. Im not sure if full support for 6900 series is in the prod version.

Also changing the CFG file can also help

1. Go to installed directory of MSI Afterburner, default: C:\Program file\MSI Afterburner
2. Use notepad to edit “MSIAfterburner.cfg”
3. Change the parameter of “EnableUnofficialOverclocking” from “0” to “1”.
post #6 of 7
Thread Starter 
Uninstalled the driver and all ATI software along with it. Reinstalled, Afterburner still was at 840 rather than 800 even though I never set it back.

Downloaded the latest Beta, same thing.

Changed the config file you told me to, and now I can go up to 1200. GPU-Z reports the speeds are actually changing also. Thanks for your help and I hope it works out. I'll start testing emulators.
post #7 of 7
okay i dont know what you did there mtear, but when i change the similar value in my cfg (beta7) it doesnt do anything ("UnofficialOverclockingMode")

EDIT: ah i see http://forum-de.msi.com/index.php?page=Thread&postID=771271#post771271
Edited by muselmane - 2/15/11 at 4:38pm
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