https://forum.asrock.com/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Sat, 04 Apr 2026 02:41:38 +0000 Sun, 04 Apr 2021 17:33:34 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 https://forum.asrock.com/RSS_post_feed.asp?TID=18535 https://forum.asrock.com/forum_images/web_wiz_forums_black.png https://forum.asrock.com/ https://forum.asrock.com/forum_posts.asp?TID=18535&PID=85169&title=z370-resizeable-bar-decreases-performance#85169 Author: 27182
Subject: 18535
Posted: 04 Apr 2021 at 5:33pm

I got feedback from another user with similar hardware (Z370 Extreme4 - 9900k - 3090 FE).
He had similar observations.
Note that this performance drop is more obvious at resolutions of 1440p and lower.]]> Sun, 04 Apr 2021 17:33:34 +0000 https://forum.asrock.com/forum_posts.asp?TID=18535&PID=85169&title=z370-resizeable-bar-decreases-performance#85169 https://forum.asrock.com/forum_posts.asp?TID=18535&PID=85135&title=z370-resizeable-bar-decreases-performance#85135 Author: 27182
Subject: 18535
Posted: 02 Apr 2021 at 6:04pm

On the graphs, it seems CPU performance lowers when ReBAR is active, which leads to lower FPS even if GPU performance increases.
Any help£]]> Fri, 02 Apr 2021 18:04:39 +0000 https://forum.asrock.com/forum_posts.asp?TID=18535&PID=85135&title=z370-resizeable-bar-decreases-performance#85135 https://forum.asrock.com/forum_posts.asp?TID=18535&PID=85114&title=z370-resizeable-bar-decreases-performance#85114 Author: 27182
Subject: 18535
Posted: 01 Apr 2021 at 11:22pm

Hello, having issues with Resizeable BAR.

My hardware

Z370 Extreme4, BIOS 4.21B
i9 9900K, stock clocks, 1.2V
RTX 3080 FE, 1900MHz @ 0.9V

With everything updated (BIOS 4.21B, vbios updated, latest Geforce driver), I enabled Resizeable BAR (verified through Nvidia Control Panel and GPU-Z).

Then I tried to evaluate the performance increase in Horizon Zero Dawn and RDR2. In both case ReBAR decreases my fps.

Horizon Zero Dawn

ReBAR OFF : 125 FPS Average
https://image.noelshack.com/fichiers/2021/13/4/1617288924-capture-d-ecran-2021-04-01-16-28-02.jpg

ReBAR ON : 111 FPS Average
https://image.noelshack.com/fichiers/2021/13/4/1617288944-capture-d-ecran-2021-04-01-16-52-08.jpg

Red Dead Redemption 2

ReBAR OFF : Min 38.2 Max 136.6 Mean 97.5

ReBar ON : Min 35.5 Max 121.0 Mean 96.4

Disappointed with the results, I'll leave ReBAR off for now.

Can anyone share their results on this platform£
ASRock, is this expected£]]> Thu, 01 Apr 2021 23:22:10 +0000 https://forum.asrock.com/forum_posts.asp?TID=18535&PID=85114&title=z370-resizeable-bar-decreases-performance#85114