Z790 Taichi XMP unstable @6800mhz
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=25842
Printed Date: 18 Jul 2025 at 9:09am
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: Z790 Taichi XMP unstable @6800mhz
Posted By: lawshadow
Subject: Z790 Taichi XMP unstable @6800mhz
Date Posted: 01 May 2023 at 5:34am
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Hi all, Specs: i7-13700K (stock NO OC) Asrock Z790 Taichi MSI RTX 4090 Gaming X Trio Samsung 980 Pro 1TB Corsair HX1500i (2022 model) G-Skill F5-6800J3445G16GX2-TZ5RK I had a couple of game crashes so i checked data log within Windows 10 and i suspected RAM issue. I run full Memtest86 with XMP profile and within 10 sec had 3 errors. Then i loaded "optimal defaults" in BIOS to run RAM frequency at INTEL default, run full Memtest86 again NO errors = PASS. Then i loaded XMP again this time i lowered RAM frequency from 6800 to 6000mhz, run full Memtest86 again NO errors = PASS. The RAM i have is on Asrock QVL list ---- G-Skill F5-6800J3445G16GX2-TZ5RK So what is causing this board not to run my RAM stable at the advertised speed of 6800mhz? Yes i can play games but they did crash i can surf internet i tested GPU with 3Dmark no issues tested CPU with Cinebench zero issues with XMP and optimized default. Do i need to change certain settings in BIOS other then simple enable XMP? Thanks in advance |
Replies:
Posted By: RLGL
Date Posted: 01 May 2023 at 10:18pm
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XMP is an overclock. There is no guarantee it will work. You may have to relax the timings a bit or settle for a lower speed. ------------- Asrock Z370 Gaming K6,Intel i7 8700K, Asrock x570 Taichi |
Posted By: lawshadow
Date Posted: 05 May 2023 at 4:20am
That's true however 6800mhz isn't that high of an overclock i mean i understand if your using 7200mhz + kits thats a different story. Regardless its weird when i set XMP but at 6600mhz it also fails Memtest86 albeit after 1.5 hours, XMP 6800mhz fails under 1 minute. Upon further research as others had similar issues you can buy a 7200mhz kit on the boards QVL list and do -----> minus 400mhz and magically it passes Memtest86. So i did the same from 6800 to 6400mhz and it passed. It seems manufacturers LIE about the speeds just so they can brag! Made a thread on another site: https://www.overclock.net/threads/help-with-6800mhz-xmp-on-z790-mb-solved.1805765/" rel="nofollow - https://www.overclock.net/threads/help-with-6800mhz-xmp-on-z790-mb-solved.1805765/ And only Gigabyte seems to acknowledge the minus 400mhz to make it work! Common clearly something wrong with the BIOS because if it was a faulty KIT i would have errors even at default. Anyway ive loaded optimal defaults THEN enable XMP but at 6400mhz tested it with FULL Memtest86=PASS, Prime95 (torture test for memory controller and ram option) 1 hour = PASS, OCCT memory test 1 hour = PASS after that i changed the CAS timings from CL34-45-45-108 -> CL30-39-39-(39)-79. Done again all the tests all is passed. No tweaking the voltage it was set to 1.40v ram volt. If people have similar issues as mine TRY to enable XMP BUT lower RAM frequency by 400mhz regardless of the kit could be 6000mhz becomes 5600mhz, 7200 becomes 6800mhz etc etc. |
RLGL wrote:Posted By: Tog
Date Posted: 26 Nov 2024 at 6:32am
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Z790 Taichi 13700 ASUS ProArt LC 420 All-in-One 420mm Liquid CPU Cooler TeamGroup Xtreem 48GB (2X24GB) DDR5 PC5-60800C36 7600MHz Dual Channel Kit Found some useful info in that link. XMP1 selected for 7600MHz, altered clock to 7200MHz and now works, thanks. ------------- Oh, go on then |