Originally Posted by phazer11
Alright, I'm sorry to have to ask but I've done a reasonable amount of searching this thread and the rest of the forums but could someone help me out?
I have an EVGA GTX 780 Dual Classified 3GB with the ACX cooler and I'm trying to learn how to OC it reasonably. Most of the stuff I've dug up pertain to BIOS mods and such. I've been trying to use EVGA Precision X but >v< this whole offset business for a GPU is just so weird (used to my GTX 460).
Run your card at stock and record (using Afterburner, Precision X, or GPU-Z) what it boosts to. That's your stock boost. Say it boosts to 1000MHz.
Open Precision X or Afterburner. If you move the core clock slider to +100, then you will boost to 1100MHz (or thereabouts, because the increments go in 13MHz steps). The same rules apply to the memory. Stock memory runs at 1502MHz (6008MHz effective). +500 on the memory will take you to 7008Mz effective. Double the mem offset to get to the effective mem MHz increase.
If you want to start messing with voltage, get the Classy Voltage Tuner in the OP (or you can go up to 1.212v using AB and Precision X if you enable voltage control within the software). If you want a non-boost BIOS grab skyn3t Rev.3 if you have a A1 revision card or Rev.3 or Rev.4 if you have a B1 card. I've posted detailed BIOS backup and flashing instructions within the last few posts.
As a baseline, I think you should be able to get to ~1,260 or so with stock volts, give or take. Some cards are better than others. Move up your GPU offset slowly, maybe ~26 MHz at a time and test stability with Valley, Heaven, gaming etc. After you're done OCing core, then move onto mem. No need to be messing with both simultaneously.Edited by coelacanth - 3/6/14 at 1:41pm