mR_CaESaR
Champion
I do have an MSI Twin Frozr III 760 coming in the next few days, so I'll also try that.
Got delivery of the 760
I need two attempts at it..
When I first installed it as is, it booted, but everything lagged, so I thought flashing the bios would fix it.
After flashing the 760 BIOS found in the X3 Official Firmware thread, it showed the same behaviour as the Gigabyte 760 I had where it would boot to the TTX3 logo screen, beep and then wouldn't do anything else.
I initially flashed the MSI card back to a default bios found here - msi-gtx760-2048-140306, but this also got to the TTX3 logo and just hung.
I then flashed it with the no UEFI support BIOS and that worked fine - it booted the same way as it did when I first tried it.
After rediscovering the card in device manager, it showed up as NVIDIA GTX 760 and it has been working fine .
The Gigabyte 760 I originally purchased hasn't worked, but I didn't flash the card to a no UEFI bios, I don't think i'm going to bother as the only way that card fits is if you take the fan out of the TTX3.