7870 OC help

[DyGr00339]

What should my voltage, clock, temp all that be new to all this?

[jwarner.atl]

I'm assuming that you understand the basics of GPU overclocking. If not, then check out this NCIX Tech Tips episode:

 

 

It's two years old, but the basics still apply.

 

As for the 7870 specifically, GPU Review has a nice table of the overclocks that testers achieved when the card first came out:

 

http://www.gpureview.com/gpureviews-hd-7870-and-hd-7850-overclocking-roundup-article-927.html

 

Linus Media has a list of overclocks that they believe most people should be able to achieve:

 

https://docs.google.com/spreadsheet/ccc?key=0AmLKAgEko3SAdHFtby1jNTFvaTF2UHhaMzdMQ0FNM2c#gid=0

 

They are using the MSI Hawk edition 7870, but if you cut back on the overclock just a bit (say 10 - 15 percent) and slowly build from that, you should find what works for you. Make sure you test for stability at every step. As long as your temps stay under about 80 - 85C under full load you should be good, but lower is better. Some cards just don't overclock very well. I have two MSI 7870 Hawks in Crossfire and have yet to find a stable overclock of any significance. Since they give me plenty of power as they are, I just leave them at the stock OC. It happens sometimes.

 

Remember that many manufacturers do not warranty damage caused by overclocking, but usually they have no way of knowing anyway. Good luck.