Intel Motherboards - Z890 livemixer NVMe Gen4 slow speeds

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Z890 livemixer NVMe Gen4 slow speeds

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=113344
Printed Date: 04 Oct 2025 at 6:03am
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com

Topic: Z890 livemixer NVMe Gen4 slow speeds

Posted By: matis1985
Subject: Z890 livemixer NVMe Gen4 slow speeds
Date Posted: 03 Oct 2025 at 1:58pm

Hi.
I have an issue with my livemixer z890 motherboard. I've installed 3 nvme ssds. All of them are gen4 drives- lexar nm790, samsung 980pro and crucial t500. Lexar is conected to the gen5 slot, samsung is conected to the slot whitout heatsink and those drives runs with gen4 speeds. My crucial drive is connected to the one of slots that are covered with heatsink. CrystalDisk Info shows that crucial is gen4 disk but when i run any disk benckmark my speeds are very low. write speed is barely above 3500mb/s. i'm on 3.08 bios with ultra core 7 265kf. I've disabled sata ports in the bios, and manually changed all nmve slots from auto to gen 4 in bios. It didn't help at all. Do i need to change something else in bios?
Maybe Someone of Forum members had simillar issue and know how to fix it?