ASRock Forums : Graphic card on PCIE2?

ASRock Forums : Graphic card on PCIE2? https://forum.asrock.com/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Tue, 07 Apr 2026 15:59:19 +0000 Wed, 27 Dec 2017 14:36:00 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 https://forum.asrock.com/RSS_post_feed.asp?TID=7079 <![CDATA[ASRock Forums]]> https://forum.asrock.com/forum_images/web_wiz_forums_black.png https://forum.asrock.com/ <![CDATA[Graphic card on PCIE2? : Depending on your CPU (I don't...]]> https://forum.asrock.com/forum_posts.asp?TID=7079&PID=41828&title=graphic-card-on-pcie2#41828 Author: PetrolHead
Subject: 7079
Posted: 27 Dec 2017 at 2:36pm

Depending on your CPU (I don't know the specs of the i9-7900x), you might want to install it to PCIE3 instead. From your motherboard's manual:

4 x PCI Express 3.0 x16 Slots*

* If you install CPU with 44 lanes, PCIE1/PCIE2/PCIE3/PCIE5

will run at x16/x8/x16/x0 or x8/x8/x16/x8.

* If you install CPU with 28 lanes, PCIE1/PCIE2/PCIE3/PCIE5

will run at x16/x0/x8/x0 or x8/x0/x8/x8.

* If you install CPU with 16 lanes, PCIE1/PCIE2/PCIE3/PCIE5

will run at x16/x0/x0/x0 or x8/x0/x4/x0.

Edited by PetrolHead - 27 Dec 2017 at 2:36pm]]> Wed, 27 Dec 2017 14:36:00 +0000 https://forum.asrock.com/forum_posts.asp?TID=7079&PID=41828&title=graphic-card-on-pcie2#41828 <![CDATA[Graphic card on PCIE2? : I've heard the performance...]]> https://forum.asrock.com/forum_posts.asp?TID=7079&PID=41827&title=graphic-card-on-pcie2#41827 Author: sohleks
Subject: 7079
Posted: 27 Dec 2017 at 2:26pm

I've heard the performance difference is extremely minimal. Like 1%. And even then that might've been because they were testing a high end gpu like that in a 8x slot and your nice mobo like that would have two x16 slots. Current gen cards hardly max out on a pci gen 3 8x slots.

The largest difference would probably just be thermals IF it's like blowing hot air right against like a power supply shroud.

Edited by sohleks - 27 Dec 2017 at 3:03pm]]> Wed, 27 Dec 2017 14:26:52 +0000 https://forum.asrock.com/forum_posts.asp?TID=7079&PID=41827&title=graphic-card-on-pcie2#41827 <![CDATA[Graphic card on PCIE2? : I have:Fatal1ty X299 Professional...]]> https://forum.asrock.com/forum_posts.asp?TID=7079&PID=41825&title=graphic-card-on-pcie2#41825 Author: PistolPat
Subject: 7079
Posted: 27 Dec 2017 at 1:43pm

I have:
Fatal1ty X299 Professional Gaming i9 XE
i9-7900x
32 gb of memory
ASUS ROG STRIX GeForce GTX 1080TI OC Edition

My graphic card is very long and it is blocking USB3_5_6. Can I install my graphic card on PCIE2? Will it affect the performance? If it does affect performance, what are my options? Thanks for your help.
]]> Wed, 27 Dec 2017 13:43:58 +0000 https://forum.asrock.com/forum_posts.asp?TID=7079&PID=41825&title=graphic-card-on-pcie2#41825