Z490 Aqua PCI Lanes?

Message Topic Search Topic Options Post Reply Create New Topic Printable Version Translate Topic

   Can anyone tell me how the PCIE lanes are distributed on the Z490 aqua?

It seems like no matter what I do my graphics card wont read at 16x (even when running a bench).

I know the NVME SSDs are likely the culprits but I'm not sure of the actual lane distribution to correct it.

The manual was no help. Does anyone know which (if any) are safe to use with NVME so I can still get 16x out of my card? I'm planning to get a 3090 so will need the extra bandwidth.

Author	Message Topic Search Topic Options Post Reply Create New Topic Printable Version Translate Topic
Entram Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 02 Sep 2020 Location: TX Status: Offline Points: 4	Post Options Post Reply Quote Entram Report Post Thanks(0) Quote Reply Topic: Z490 Aqua PCI Lanes? Posted: 02 Sep 2020 at 2:20am
	Can anyone tell me how the PCIE lanes are distributed on the Z490 aqua? It seems like no matter what I do my graphics card wont read at 16x (even when running a bench). I know the NVME SSDs are likely the culprits but I'm not sure of the actual lane distribution to correct it. The manual was no help. Does anyone know which (if any) are safe to use with NVME so I can still get 16x out of my card? I'm planning to get a 3090 so will need the extra bandwidth.

ASRock_TSD Members Profile Send Private Message Find Members Posts Add to Buddy List ASRock_Official Joined: 20 Mar 2015 Status: Offline Points: 8907	Post Options Post Reply Quote ASRock_TSD Report Post Thanks(0) Quote Reply Posted: 02 Sep 2020 at 12:10pm
	Dear Entram, Thank you for posting your query to the ASRock forum. Regarding your question, if the PCIe slot is --> Occupied with one graphics card --> single at x16 (PCIE1); --> Occupied with two PCIe devices --> dual at x8 (PCIE1) / x8 (PCIE4); With thanks, ASRock TSD Edited by ASRock_TSD - 02 Sep 2020 at 12:11pm

Entram Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 02 Sep 2020 Location: TX Status: Offline Points: 4	Post Options Post Reply Quote Entram Report Post Thanks(0) Quote Reply Posted: 03 Sep 2020 at 7:45am
	This doesn't answer my question at all. Are you saying if I use any NVME at all in my THOUSAND DOLLAR motherboard my graphics card goes into 8X speed?

ASRock_TSD Members Profile Send Private Message Find Members Posts Add to Buddy List ASRock_Official Joined: 20 Mar 2015 Status: Offline Points: 8907	Post Options Post Reply Quote ASRock_TSD Report Post Thanks(0) Quote Reply Posted: 03 Sep 2020 at 11:18am
	Dear Entram, Thanks for the reply. NVMe M.2 will not affect the lanes of the PCIe slots. The information above is just a reference that if there are two PCIe cards plugged to the PCIe slots, the graphics card will run at x8. With thanks, ASRock TSD Edited by ASRock_TSD - 03 Sep 2020 at 11:19am