Quote Originally Posted by vaderat-at View Post
I upgraded from 8800GTX to 4870 X2 without any issues. First thing I did was uninstall the Nvidia drivers, power down, swap the cards and powered up into Windows. Installed the Catalyst Software Suite 8.8 (54.3MB) rebooted and that's that.

I was using bios 0901 at the time and have since flashed to 1301 and have still not run into any problems. My NB voltage is set to 1.28 in the bios.

Has your PSU got 8 pin PCIE connectors or are you using an adaptor? What's your PCIE Freq in bios set to? 100? Sorry for the obvious questions - Gotta cover all the angles.
Thank you for sharing.
I am using an adaptor that combines 2 6 pin PCIE plugs. My PSU came with 4 6 pin PCIe cables.
Not once have I messed with NB voltage. Perhaps that is an issue?

PCI Freq always set to 100.

Any help is appreciated!