Z790 taichi lite Gen5 M2 and RTX 4080 Super
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=31000
Printed Date: 19 Jul 2025 at 8:07pm
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: Z790 taichi lite Gen5 M2 and RTX 4080 Super
Posted By: domerdel
Subject: Z790 taichi lite Gen5 M2 and RTX 4080 Super
Date Posted: 29 Feb 2024 at 9:58am
I received my ASRock motherboard and other components arriving over the weekend to start my build. Upon reviewing the instruction manual, if
M2 2_1 is used, then PCIe #1 is downgraded from PCIe 5.0x16 down to 5.0x8. or...
If I use M2 2_2 then my Gen5 M2 drive gets bumped down from Gen5x4 to Gen4x4 (128Gbs to 64Gbs).
Where will I see the biggest sacrifice on performance between scenario 1 vs. 2 above? some are saying scenario 2, but others say 5x8 (4x16) doesn't fully utilize the bandwidth of 5x16 and I'd see about a half second difference.
Components:
ASRock Taichi Lite Z790
Gigabyte 4080 Super (refresh of 4080)
Crucial T700 Gen5 1TB
|
Replies:
Posted By: ASRock_TSD
Date Posted: 05 Mar 2024 at 4:38pm
Hi domerdel,
Thank you for your post.
This depand on your monitor, if your monitor is 4K, then the method 2 is better.
Under 4K resolution, RTX 4090 will get about 1-2% loss in the Gen4x8 mode (RTX40 series support PCIE 4.0 only). So I think RTX 4080 Super is less affected.
Performance loss is related to resolution. With the 1080P monitor, you will gets up to 15% performance drop.
All the best
ASRock TSD
|
|