Hi David,
Here is the Asrock X99 OC Formular/USB3.1 latest BIOS.

Hi All,

I hope you all are well. I wanted to give some feedback and ask for assistance with regards to having both my gpu and m.2 operational at the same.

Thanks @Fernando for all the help.

It seems that my rev 1.1 ga-z77m-dh3 mATX motherboard has a pcie link for the pxie 3.0 x16 and the pciex4 (2.0) which causes the issue when using both these slots at the same time due to the auto enabled crossfire pcie link which links both the slots when they are used by an amd VGA.
It's been literal hell wasting hours on this only to realise its something else. I have now gone through many intel 7 series, DMI and intel fdgma forums/docs.

I wanted to find out what would it take to have the entire pciex4 running through the chipset and having the gpu running at x16 pcie 3.0 .

It seems like i need to do the changes mentioned on page one by changing the intel RCSsetup, however this may still link the two pcie slots due to the crossfire ability being actively applied whenever any amd VGA is on either slot. I only have two R9380s to test/make it work with.

Does anyone know how to delink the two pcie slots and completely remove crossfire from bios so that i have two independent slots which do not look for a master slave due to enable pcie linking?

Thanks in advance, Any suggestions/help is appreciated!

Hallo,
i have an ASRock X99 Extreme 6/3.1 and ASRock X99X Fatility Killer 3.1. On my Extreme I am trying to use bifurcation and followed this guide. It also seems to work to the extent that the PCIe lanes are split and I can address two NVME SSDs on the x8. HWINFO64 also shows it like this. But if both are accessed with 3.0 standard (8GB/s) I get bluescreens and WHEA errors under Windows. Or the second NVME SDD is only accessed with the 1.0 standard (2.5GB/s). Where can be the problem?

Hello everyone, i have been through all the posts on this forum in order to get my Asus Hyper M. 2 X16 CARD V2 working on Asus X99 A II board, no success. First it took me ages to even get bios flashback working - i think it was the Thunderbolt Header connected to the motherboard that prevented it to work even with original CAP files. Then i had to get it working with my bios modified with AMIBCP as it would read and write to CAP but changed the header (fixed using hex editor to copy header of the original cap to the modded one).
Now, does not matter wich settings i bake into the bios, i can only see one out of 4 SSDs. I just edited all the slots to 4x/4x/4x/4x just to be sure, enabled Extended sync mode, set Link Retraining retry to 5 (max value) and Link Training Timeout: to 10000 (with these values i was not able to boot with the GPU in the CPU PCIe lanes, i needed to move it to PCIEx16_2 wich is PCH controlled).

Every other bios setting i edited shows up fine (at least this is very useful as i run hackintosh on the machine and i need less configuration when i clear cmos now).

The funniest part? With my previous Shark x99D8 cheap chinese motherboard i had the raid card working flawlessly. Funny, being the card Asus made.

Cpu is the same 1650 v4 (40 pcie lanes).

I have the first PCIEx16_1 with GPU, second slot (from pch) empty, third slot with Asus Hyper M. 2 and fourth slot running Thunderbolt EX card (working fine in macos). I tried swapping the GPU and Hyper card in different position and taking the Thunderbolt card out.

Any suggestion left?