https://forum.asrock.com/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Wed, 10 Jun 2026 07:44:01 +0000 Wed, 15 Jun 2022 04:47:58 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 https://forum.asrock.com/RSS_post_feed.asp?TID=24615 https://forum.asrock.com/forum_images/web_wiz_forums_black.png https://forum.asrock.com/ https://forum.asrock.com/forum_posts.asp?TID=24615&PID=100320&title=bifurcation-on-alder-lake-mobos#100320 Author: comes4free
Subject: 24615
Posted: 15 Jun 2022 at 4:47am

Thank you for reply!

Already bought h670m and tested that "riser" option. 4x4 card with 2 NMVe drives attached still unaccessible anywhere. On my primary PC mobo (x299, msi) it worked after splitting x8-x8 and enabling PCIe slot for VROC. How I haven't 4 identical drives to test, haha.
Is there any way to attach 4, 2, even 1 NVMe m.2 drive via PCIe x16 graphics slot to h670 in addition to two Hyper M.2 slots? Or it really can be done only on HEDT/Xeons? Don't want nothing Intel RAID, pass-thru will be enough.

By the way, is it possible in future to split 4x4 on h670 with some another FW or there are some architecture limit?

Again, thank you very much for your attention.]]> Wed, 15 Jun 2022 04:47:58 +0000 https://forum.asrock.com/forum_posts.asp?TID=24615&PID=100320&title=bifurcation-on-alder-lake-mobos#100320 https://forum.asrock.com/forum_posts.asp?TID=24615&PID=100308&title=bifurcation-on-alder-lake-mobos#100308 Author: ASRock_TSD
Subject: 24615
Posted: 14 Jun 2022 at 5:10pm

Hi comes4free,

Thank you for your post.

H670M-ITX/ax and Z690M-ITX/ax can split the PCIe x16 to x8/x8.

Please select the option "riser card support" to x8/x8.

All the best
ASRock TSD]]> Tue, 14 Jun 2022 17:10:56 +0000 https://forum.asrock.com/forum_posts.asp?TID=24615&PID=100308&title=bifurcation-on-alder-lake-mobos#100308 https://forum.asrock.com/forum_posts.asp?TID=24615&PID=100254&title=bifurcation-on-alder-lake-mobos#100254 Author: comes4free
Subject: 24615
Posted: 09 Jun 2022 at 12:53pm

Hi there.

I have an option to buy Asrock H670 ITX/AX or Z690 ITX/AX for home server. I have a pcie card with 4 nvme m.2 slots. Previosly tested this pcie card with b365m pro4 on my job and it just sees nothing. I wondered why and googled about pcie bifurcation, but manuals for any of that mobos silences about it.

Does h670 itx ax or z690 or any non hedt mobo for 12th gen Intel processors support x4/x4/x4/x4 bifurcation for main pcie slot? Or at least x8/x8? Is it planned or possible to add it with firmware update? Does it depend on processor? I have 12400t.

Thanks.]]> Thu, 09 Jun 2022 12:53:39 +0000 https://forum.asrock.com/forum_posts.asp?TID=24615&PID=100254&title=bifurcation-on-alder-lake-mobos#100254