Give me a slight guide to overclocking a 7850?

[spat55]

Someone just bumped this, simple way is to use Uniengine Heaven or Valley and use Sapphire Trixx to overclock, as Trixx is the only thing that allows me to change voltage. got it to 1120MHZ core with standard voltage.

 

[jay_nar2012]

Go up in little steps (10-20MHz steps) and check for stability, once it gets unstable step back down to the highest stable point you can find.

 

[spat55]

Go up in little steps (10-20MHz steps) and check for stability, once it gets unstable step back down to the highest stable point you can find.

Which tests should I run? And how will I know it is unstable? Think these are the only things that I am struggling with atm.

 

[bigcyco1]

http://www.youtube.com/watch?v=gA_l5-HDel4&feature=related and maybe this http://www.youtube.com/watch?v=QYeCVhGAHHs

 

[manofchalk]

If the card you have bought has an factory OC'd version, you can generally jump straight to those settings and go from there. Hardware wise both cards should be the same.

Also in general, a higher core clock = better performance than a higher the memory clock. So if you have an unstable clock, decrease the memory more than the core. I think the ratio is 1Mhz on the core = 4Mhz on the memory in terms of performance boost. Don't hold me to that though.

That NCIX Tech tips Video is very good, I followed that and I am enjoying a fairly good overclock.

Just one caveat, for some reason I didn't get any artifacts or issues running Furmark (or MSI's Kombuster) with a bad overclock.
You will have to play games or use 3D Mark11 to ensure you have a stable overclock.
Though Furmark is good for getting worst case scenario temperatures.

http://www.3dmark.com/3dmark11/download/
http://www.ozone3d.net/benchmarks/fur/

 

[Moroz Academy]

Hi guys, just decided to add my 5cents. Here is a nice guide on How to Overclock Diamond Radeon HD 7850. Full guide: http://www.tomshardware.com/faq/id-1828735/radeon-7850-overclocking-tutorial-full-guide.html#xtor=EPR-8810