I wanted to post this to save anyone else the headache I went though to get the 950 pro to work.

I followed the tutorial on overclock - here and also tried the one - here without any luck.

No matter what, I kept getting the "File Size Exceeds the Volume Size" message which was super annoying. With some googling I found this. Don't delete the mouse driver as mentioned, for whatever reason you can't (or I couldn't) get into the advanced bios as described.

Instead I followed the information from the last post and deleted:
NetworkStackSetupScreen
DcpDxe
ArpDxe
SnpDxe
MnpDxe

I then went back to the overclock tutorial method and inserted the three nvme modules as described (Nvme, NvmeSmm, NvmeInt13). This worked fine, I flashed the BIOS using the gigabyte @BIOS utility and restarted with a working NVME drive.

For the Z77X-UD3H - I used the F18 bios from Gigabyte.

The bios I took the modules from was the F9 from Gigabyte.

As to results of the drive, running on the 4xPCIe (v2) slot, I'm getting approx 1500 read and 900 write.

Hi, I have the same mobo and I am considering using a Intel 600p. Thanks for posting this info, I have some questions.

First, from what BIOS did you did you extract the 3 NVMe modules you listed ? (You only mentioned F9... Was it the Z97X-UD3H ?)

Also, why those 3 modules instead of the module in this guide ? Was it bigger ?

Thanks !