7970 Overclocking problem.

[Paalandre]

Hello.
I started doing some overclocking on my 7970 using MSI afterburner yesterday. I got it up to 1250Mhz Core Clock with 1235mV.
I want to clock it higher, but to do so I need to get my volt over 1300mV. Afterburner and Trixx wont let me do that at the moment, so I need some help figuring out how to do it.

My card is a reference Sapphire Radeon HD 7970 with a Koolance waterblock on it. The loop consist off a D5 pump, 60x240mm rad, 60x360mm rad, gpu block and cpu block.
After a long stress test the max temps on my card is around 50-55C, so I feel like I got a lot to go on.

Thanks for any help given to me ^_^

 

[tinytomlogan]

I doubt youll get it higher. If you do and push the voltage higher you massively increase the risk of ruining the GPU. If you push it too far you may find that it wont even run stable at 1250 anymore........ GPU's are actually pretty sensitive and will chuck their toys out of the pram if pushed too hard.

 

[Master&Puppet]

Best thing to do with GPUs is push the clock at stock volts (you can usually get 10-20% extra clock depending on the GPU - and AMD 7xxx are particularly underclocked out of the factory).

When you get to a stage where your GPU is not powerful enough then shoot for an overvolt but only run it when you are in game. Don't run it 24/7. Alternatively sell it on and get a more powerful GPU.

 

[Josh Weston]

Upgrade from a 7970? Another 7970?

 

[Paalandre]

upgrade from a 7970? Another 7970?

7990! :lol:

 

[Paalandre]

One more thing. Im not sure if I might have already damaged the gpu, if so it would be a shame and I think I would go for the 7990 for fun
But ye, when I run Unigine Heaven, my GPU load is only at around 20-50% making it lag due to getting only 20-40fps.
I just ran it out off the box, with dual monitor settup.
Edit: Had a cpu bottleneck (konbustor running).