i use evga percision X as my overclocking program, I like it due to it's simple interface, but all overclocking programs are the same mostly.
so basically you start by downloading heaven:
http://www.guru3d.com/files-details/download-unigine-heaven-benchmark.html (gpu stressing program)
you run it on 1280x720 windowed on high settings and while it's running you start your overclocking.
with the OC program you first check your maximum GPU core speed OC. you start bumping your gpu's speed by each and each tiny increase till you find the max. so for example after the program is running in the background you bump the core clock with +10 oc, is it stable? then you continue. and then you basically repeat the same process until the program crashes and you find your maximum core clock OC. when it gets unstable you return to the pervious value before the crashing.
so now there's the VRAM speed overclock, this thing is easier to OC than core clock, you can try increasing it by fifties each time till the program starts to artificate. (pixels turn pink and green) when you see artificating you return to the pervious value.
and that's it. however, some last but not least, some very important tips to make sure your OC is good:
1) increase power target to max to avoid GPU throttle in the OC program
2) increasing voltage can give more headroom to overclock and you can OC to higher numbers, recommended to do
3) make sure to make so the overclock saves each time you startup your PC
now there are special occasions where there will be GPU Bios Mods (basically some advanced stuff to increase GPU OC), this stuff mod your GPU to get better OC if there's a faulty OC with it. (such as higher voltage unlocking & higher power target unlocking because defualt values are low) you may google about that. (common thing that can happen is power target is too low and GPU still throttles, you can get a bios mod which can fix that)
and that's it, that's how I OC'd my gpu. for any questions ask me. p.s sorry for grammar mistakes, i am not a native speaker.
Thanks in advance.
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