Originally Posted by Athena
I currently have a 6800nu with the extra pipes unlocked, but the darn thing will not OC even 1Mhz.
Here is the deal how to OC an unlocked NU. I install the driver, Coolbits, OC it to for instance 370x900. I reboot and install Rivatuner, and unlock the pipes. Reboot. I actually have to use a reg file and copy nvstrap.sys (Rivatuner unlocker driver) manually into the sys32/drivers because the Nvstrap tab never appears on this Windows install. I figured out the correct values thru my backup Windows install.
Anyway, when you start Rivatuner again, you will see that you have 16/6 pipes and when you start the hardware monitor youŽll see that the clocks are for instance the 370x900. My 12x5 max OC was 390x900, but this way I could use it also when I unlocked the pipes to 16/6. I did run into some instability recently, it acts like an overheating issue, but the card maybe 3 degrees hotter on max. load. So I might have to up vcore with Nibitor or lower the core somewhat. One of these two should cure or reduce the instablity.
EDIT: I should learn to read the full thread first. Redphoenix basically already told you how to do it. Sorry guys.