X399M Taichi only PCIx 2.0 Mode
Printed From: ASRock.com
Category: Technical Support
Forum Name: AMD Motherboards
Forum Description: Question about ASRock AMD motherboards
URL: https://forum.asrock.com/forum_posts.asp?TID=9093
Printed Date: 01 Nov 2025 at 7:09am
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: X399M Taichi only PCIx 2.0 Mode
Posted By: crazeedee
Subject: X399M Taichi only PCIx 2.0 Mode
Date Posted: 07 Jul 2018 at 1:51am
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" rel="nofollow - Hey all, i am wondering that in Bios only PCIx Mode aviable is in Auto, 1.0, 2.0 . No option for PCIx 3.0 Mode. Grafik Card is running maximum on 2.0 Mode. Someone any idea ? https://ibb.co/kUfpZy" rel="nofollow">  ------------- ASROCK X399M Taichi AMD THREADRIPPER 1950x @ 3,8Ghz 32GB CORSAIR DOMINATOR PLATINUM 3200 EVGA GEFORCE 1080GTX FTW2 ENERMAX TR4 240 WATERCOOLING CORSAIR HX1000i POWER SUPPLY |
Replies:
Posted By: TANWare
Date Posted: 08 Jul 2018 at 6:05pm
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My guess here; Gen1 forces PCIx 1.0 Gen2 forces PCIx 2.0 Auto allows system auto select of PCIx 1, 2 or 3. So the others are compatibility fall backs. ------------- x399 Taichi, 1950x, 32GB 3466 DDR4 2x500GB 960EVO,Asus 1080TI http://www.pcambrosia.com/images/PassmarkEVO960_e.jpg" rel="nofollow - Passmark |
Posted By: MNMadman
Date Posted: 09 Jul 2018 at 1:35am
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There is no problem. As TANWare said, the Auto setting allows the system to select any PCIe version based on what the hardware capabilities are. The other options in the menu force the lower versions. ------------- Heatripper Threadkiller // 1950X @ 4.141GHz 16C/16T // Taichi // 32GB 3232 RAM // // Titan Xp @ 2075MHz/12,000MHz // 2TB+512GB NVMe SSDs // Custom Liquid Cooling Loop // |