Asroch Z490 Extreme4 + RKL-S Altency Issues
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=19325
Printed Date: 04 May 2024 at 8:09pm
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: Asroch Z490 Extreme4 + RKL-S Altency Issues
Posted By: Moppps
Subject: Asroch Z490 Extreme4 + RKL-S Altency Issues
Date Posted: 30 Jul 2021 at 11:54pm
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Hi all, I recently upgraded from a i5-10400 to a i9-11900 on my Z940 Extreme 4. I flashed Bios to last stable release wich was 1.70 everything seemed to be fine. But when i ran AIDA 64 Cache and Memeory Test i noticed wired wright performance coupled with sub pare latency for choosen Ram settings. I switched to Beta bios 1.72c but nothing changed. https://www.directupload.net/file/d/6260/vlgi647h_png.htm" rel="nofollow">  I checked subtiming an found some wired trained values that killed wright performance (tWRWR_dg was set to 8 wich greatly hinders wright performance ) I mananged to get Read/Wrigth/Copy Bandwith to reasonable numbers ater manually checking subtimings regarding choosen Dram clock and Timings but Latency was still way to worse around 55ns https://www.directupload.net/file/d/6260/x3tjhsas_png.htm" rel="nofollow">  I double checked back with the old i5 10400 and it got striaght 46ns witch is a reasonable Results for 3466 Cl14 https://www.directupload.net/file/d/6260/7hyuw34w_png.htm" rel="nofollow">  Flipped 11900 back in with comparable Mem settings , still crappy latency around 55ns , like there is no scaling with tighter timings and better clocks on RKL-S latency wise O.o https://www.directupload.net/file/d/6260/acnu2abn_png.htm" rel="nofollow">  I took the 11900 to a friend with a Asus z590prime and he got straight 48ns latency with crappy 3200 16-18-18-38 2T 530 with XMP without any other tightning of subtimings . -All test where done in Gear 1 mode in case of RKL -All test where done with Energy profile max performance -Testing with only 2 sticks and another Menemory kit ( 3600 CL16 bined B-Dies ) showed no improvment -loading optimised defaults and reseting didn´t help either -reflashing Bios didn`t help In my opinion we got a problem with Z490 Extreme 4 Bios/microcode + RKL combination that hinders performance and makes upgrades to this kind of CPUs worthless performance wise due to a seroius latency penalty compared to Cometlake ones. I hope this is something that can be fixed fast with a Bios/Microcodeupdate! |