Z390 Taichi PCI-E Lanes

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   Okay AsRock help me out here. 

You dont have a chipset for NVME and use the CPU PCI-E Lanes for the NVME drives.

Right now im using 2 NVME Drives and 5 SATA Storage drives.

So why is my GPU only running on 4 Lanes and not 8 when Intels specsheet states it should split the lanes as follows

1x16 or 2x8 or 1x8+2x4

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Animalm4st3r Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 29 Jan 2018 Status: Offline Points: 226	Post Options Post Reply Quote Animalm4st3r Report Post Thanks(0) Quote Reply Topic: Z390 Taichi PCI-E Lanes Posted: 20 Sep 2021 at 4:24am
	Okay AsRock help me out here. You dont have a chipset for NVME and use the CPU PCI-E Lanes for the NVME drives. Right now im using 2 NVME Drives and 5 SATA Storage drives. So why is my GPU only running on 4 Lanes and not 8 when Intels specsheet states it should split the lanes as follows 1x16 or 2x8 or 1x8+2x4

ASRock_TSD Members Profile Send Private Message Find Members Posts Add to Buddy List ASRock_Official Joined: 20 Mar 2015 Status: Offline Points: 8532	Post Options Post Reply Quote ASRock_TSD Report Post Thanks(0) Quote Reply Posted: 28 Sep 2021 at 6:19pm
	Hi Animalm4st3r, Thank you for your post. In general, the M.2/SATA storage you connected to Z390 Taichi will not affect the PCIe Lanes of your GPU. We recommend following the below setup to install your device. PCIE2: GPU M.2_1: nvme drive M.2_2: nvme drive SATA3_2, SATA3_4~5: SATA devices SATA3_A1~A2: SATA devices All the best ASRock TSD

keithkb Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 13 Mar 2024 Status: Offline Points: 15	Post Options Post Reply Quote keithkb Report Post Thanks(0) Quote Reply Posted: 13 Mar 2024 at 7:00pm
	I'm having a similar issue. My configuration is as follows: PCIE1: Network card PCIE2: GPU PCIE4: HBA M.2_1: nvme drive M.2_2: nvme drive M.2_3: nvme drive Everything work flawlessly until I install the GPU. Once the GPU is installed, the HBA gets disabled. The manual says that the configuration above should run at x8/x8 but it doesn't seem to. It also says that the M.2 slots do not share lanes with the PCIE slots. Is there a way to manually set the PCIE slots to 8 lanes? Any other ideas why this configuration would not be working? P.S. I have tried all the usuals, multiple HBA cards, multiple GPUs, swapping slots, swaping PSUs, etc.