Z490 Aqua PCI Lanes?
Printed From: ASRock.com
Category: Technical Support
Forum Name: Intel Motherboards
Forum Description: Question about ASRock Intel Motherboards
URL: https://forum.asrock.com/forum_posts.asp?TID=15724
Printed Date: 02 Aug 2025 at 8:56pm
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: Z490 Aqua PCI Lanes?
Posted By: Entram
Subject: Z490 Aqua PCI Lanes?
Date 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.
|
Replies:
Posted By: ASRock_TSD
Date 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
|
Posted By: Entram
Date 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?
|
Posted By: ASRock_TSD
Date 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
|
|