Zitat von euchloedtj im Beitrag #30

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Hi, first of all thanks to @agentx007 and @Lost_N_BIOS for their BIOS mod. That is what I was looking for without upgrading all my PC. I really like this motherboard.

I am trying to bifurcate the PCIE slots for using an ASUS HYPER M.2 x16 that could use 4 NMVe drives. In my current configuration I am using 2 Samsung EVO NVMe drives and I had to connect the NMVe drives in slots 1 and 3 of the HYPER M.2 card and this card is connected in PCIE slot PCIE_X16/X8_3 (based on instruction manual, which is the 3rd PCIE counting from the nearest to the CPU). In this case it seems that PCIE_X16/X8_3 appears in the bifuracation menu of the BIOS as "IOU2 - PCIe Port". I have set up as x4x4x4x4 and I don´t know why connecting the drives to the HYPER M.2 slots 1 and 2 does not recognize any drives, but connecting to slots 1 and 3 detects both. I would like in the future to use the 4 NVMe slots and the slots 2 and 4 should be working with bifurcation x4x4x4x4 in I am not wrong.
On the other hand, from bifuraction BIOS menu it shows "IOU1 PCIe Port" as a PCIE X8 slot and "IOU2 PCIe Port and IOU3 PCIe Port" as the two PCIE X16 slots. So is there a 1 port missing for configuring? or the remaing X8 slot is not able to be bifurcated?
To listing the ports as defined in the motherboard and showed in BIOS/Advanced/System Agent Configuration/IOH Configuration:

PCIE_X16_1 --> IOU3 PCIe Port (x8x8 , x8x4x4, x4x4x8, x4x4x4x4)
PCIE_X8_2 --> IOU1 PCIe Port (x4x4) ??? / Fixed to X8
PCIE_X16/X8_3 --> IOU2 PCIe Port (x8x8 , x8x4x4, x4x4x8, x4x4x4x4) in case X16 / (x4x4) in case X8 when all PCIE slots are used
PCIE_X8_4 --> IOU1 PCIe Port (x4x4) ??? / Fixed to X8

Which one wil be correct for IOU1 PCIe Port?

Will be using the HYPER M.2 with the NVMe drives, in slots 1 and 2, works inserted in PCIE_X16_1 bifurcated to x4x4x4x4 instead of the GPU card? (Just for allowing to use the 2 remaining NVMe ports of the HYPER M.2)

My final ideal setup for PCIE slots will be:
- x1 ASUS HYPER M.2 x16 with 4 NVMe drives (ideally if works in PCIE_x16_1?)
- x2 PCIE x4 SSD drives with biffurcation in BIOS (when clarified whith PCIE_X8 slot is) and with bifurcation riser cables and slots (ideally using PCIE_X8_2). The SSD drives are ASUS RAIDR
- x1 Full HD HDMI Avermedia capture card (ideally using PCIEX1_1 2.0)
- x2 ASUS GTX TITAN BLACK with SLI running at X8. (ideally, for using the rest of the setup, using the PCIE_X16/X8_3 and PCIE_X8_4 that both will be at X8)

Thanks in advance for your help and your advices.

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Hi @tylah337 it seems that when I have connected the PCIE_X8_4 the bifurcation for the PCIE_X16/X8_3 fails as you have described. Then we could think that the PCIE_X8 that could be bifurcated is the slot 2 (PCIE_X8_2 as IOU1 PCIe Port)?
I guess that there is a controller that automatically change the PCIE_X16_3 to PCIE_X8_3 when PCIE_X8_4 is connected, so the last one is fixed and without the bifurcation available. Have you try a set up as I have mentioned an ideal set up for me? Bifurcating the PCIE_X16_1 into x4x4x4x4 and lets automatically set to PCIE_X8_3 and PCIE_X8_4 when using for two GPU SLI

@euchloedtj you can bifurcate freely the first and second slot in order to get a quad nvme software raid (2 nvme in each hyper M.2) for example, and the last 2 slots for the SLI GPUs. Thats what i tried to do but unfortunately the 2nd GPU wont fit to the last slot due to enormous waterblock unless i render useless all the usb 2.0 headers, which i need, but you can try something like this if you dont need them! But this is exactly why i need to bifurcate the last 2 slots for my use case. But yeah my guess is too that unless we can disable somehow the PLX chip, it will be impossible to do so, since it bifurcates the 3rd x16 to the 3rd x8 and 4th x8 on its own, overwritting the BIOS settings.

@tylah337 I have tried all possible combinations (I guess) for trying to get 4 NVMe using a HYPER M.2 connected to a PCIE_X16 without luck. I have tried bifurcating the two PCIE_X16 into x4x4x4x4 (and all other combinations) but only detect the socket 1 and 3, socket 2 and 4 are not recognized. For using the socket 1 and 2 I have to connect to the PCIE_X8_2 with biffurcation x4x4. Have you ever tried a full 4 socket NVMe drives into a PCIE_X16 (x4x4x4x4). @Lost_N_BIOS could be possible that bifurcating a PCIE_X16 into x4x4x4x4 are missing something?
Regarding to the PLX chip I am not sure if could exist some kind of hardware jumper for bypassing the auto configure behaviour. The thing is that retail BIOS does not allow the wonderful setup as the modded BIOS, XD.

thanks, its possible modded bios to support memory DDR3 ecc?

Zitat von maur0 im Beitrag #35

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thanks, its possible modded bios to support memory DDR3 ecc?

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Hello All,

Late to this thread - I was looking to get a copy of the Asus RAMPAGE-IV-BLACK-EDITION-0801-Version-A-Birurcation mod to get my ASUS Hyper M.2 card to work with two NVMe's.

Could someone please repost the Asus RAMPAGE-IV-BLACK-EDITION-0801-Version-A-Birurcation mod?

The two links provided by Lost_N_BIOS in post #13 are no longer working.

Thank you in advance!

Zitat von Lost_N_BIOS im Beitrag #13

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@agentx007 @madindian - Yes, Bifurcation mod can be done on this BIOS as well, please give me some time and I will make for you guys based on "Version A"
* Edit >> Asus RAMPAGE-IV-BLACK-EDITION-0801-Version-A-Birurcation
Mirror Asus RAMPAGE-IV-BLACK-EDITION-0801-Version-A-Birurcation

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Some users r not active anymore... private sharing links r not recoverable, Lost has been away since January.
U can try reach other users using @username

[GUIDE] Adding Bifurcation Support to ASUS X79 UEFI BIOS
[Guide] - How to Bifurcate a PCI-E slot

support 16gb ecc memory with e5-2697v2? this memory is 1.35v
my board is rampage 4 extreme