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How to overclock the 7970

post #1 of 5
Thread Starter 
I have the HIS 7970 graphics card and I was wondering how to overclock it. Do I have to use cataylst or what kind of software should I use. Also to get better fps do I overclock the memory, core or what?

What is a cool temp I should hit for and how long and what software should I use to stress test my Gpu?
post #2 of 5
HIS may have its own overclocking utility, but I am not familiar with it. Regardless of whether they make their own or not, I would download MSI Afterburner as it has never failed me for GPU OCing.

Shoot for core clock bumps of 10-15mhz at a time at first, stability test with Unengine Heaven or Valley for many runs, then increase the core by the 10-15Mhz margin until you notice stability issues. Bump voltage bit by bit and test some more, make sure to monitor temps with each voltage increase and do not allow the card to exceed 90C in a benchmark as that is a sign that your volts are approaching too many (rises in temp). I would also recommend testing with Futuremark's 3DMark 11 and 3D Mark in the Firestrike preset. Max everything out that you wish in all the benches.

Furmark for stress testing is a stretch and really places a hyper-unrealistic threashold on the cards thermals and I find it useless for gaming, but once you think you have things really tuned in, then go for it as a last resort temperature test.

Finally, test these settings in your favorite games, play the most intensive levels or areas of the map where performance is struggling or FPS drops. If the game crashes, you will need to back off and fine tune your core and voltages. I recommend using 5Mhz decreases here.

Pro Tip: If you don't care about a power bill or power savings while gaming/stressing the GPU, then crank the power limit slider to max in Afterburner to stop core frequency throttling during benchmarks. You can back it off if you wish to be more energy efficient, but this is OCN...

For day to day use, I like to keep my temps in the low 60C under gaming load at most and do not run my max overclock on my 7950. Instead I keep it about 100MHz below and a good .2V below my max. That will improve stability and longevity of the card.
post #3 of 5
I like most of what so com said but I would skip fur mark all together. Its just not needed, heaven is just as good for stability.

I use trixx and gpu-z, its not an all in one like afterburner but for me does a better job than afterburner. I'm able to get higher clocks and diagnose between too high GPU clock (artifacts) and too high memory clock (driver crash, system lock up).

Make sure to not touch CCC over clocking, leave it unchecked. Make sure you always use +20 power tune in whatever over clocking software you use.

Don't forget to have fun, over clocking can seem daunting but it pays off once you get those clocks dialed in.
post #4 of 5
Thread Starter 
Quote:
Originally Posted by SOCOM_HERO View Post

HIS may have its own overclocking utility, but I am not familiar with it. Regardless of whether they make their own or not, I would download MSI Afterburner as it has never failed me for GPU OCing.

Shoot for core clock bumps of 10-15mhz at a time at first, stability test with Unengine Heaven or Valley for many runs, then increase the core by the 10-15Mhz margin until you notice stability issues. Bump voltage bit by bit and test some more, make sure to monitor temps with each voltage increase and do not allow the card to exceed 90C in a benchmark as that is a sign that your volts are approaching too many (rises in temp). I would also recommend testing with Futuremark's 3DMark 11 and 3D Mark in the Firestrike preset. Max everything out that you wish in all the benches.

Furmark for stress testing is a stretch and really places a hyper-unrealistic threashold on the cards thermals and I find it useless for gaming, but once you think you have things really tuned in, then go for it as a last resort temperature test.

Finally, test these settings in your favorite games, play the most intensive levels or areas of the map where performance is struggling or FPS drops. If the game crashes, you will need to back off and fine tune your core and voltages. I recommend using 5Mhz decreases here.

Pro Tip: If you don't care about a power bill or power savings while gaming/stressing the GPU, then crank the power limit slider to max in Afterburner to stop core frequency throttling during benchmarks. You can back it off if you wish to be more energy efficient, but this is OCN...

For day to day use, I like to keep my temps in the low 60C under gaming load at most and do not run my max overclock on my 7950. Instead I keep it about 100MHz below and a good .2V below my max. That will improve stability and longevity of the card.

Thx In Msi afterburner is there like a restore to default option just incase I mess up also how much voltage should I increase each time I do 10-15mhz?
post #5 of 5
yes, you can just hit reset at the bottom of the window to take settings back to stock.
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