X99E-ITX/ac pcie biforcation possibility?
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=3649
Printed Date: 21 Jul 2025 at 3:56pm
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: X99E-ITX/ac pcie biforcation possibility?
Posted By: ptunstall
Subject: X99E-ITX/ac pcie biforcation possibility?
Date Posted: 24 Oct 2016 at 8:37am
I'm looking to build a compact but powerful GPU rendering farm. Ive successfully built a 10 GPU renderbox with a xeon server mobo but I really only use the GPUs so all the space from the big mobo is just wasted. I'm interested if this mobo will allow me to biforcate the single pcie 4 ways with the e5-2670 CPU. Im using the same cpu in the bigger machine and 9 of the gpus are coming off a single cpus pcie lanes, 4 gpus per single 16x slot. Ive tried itx motherboards with the h110 and z170 chipsets but I think the pcie lane splitting between chipset and cpu is causing issues with biforcation.
Any assistance would be greatly appreciated!
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Replies:
Posted By: wardog
Date Posted: 24 Oct 2016 at 12:31pm
Questions concerning bBiforcation comes up here on occasion.
Us Mods here don't have access to that technical info. Use the below to contact ASRock Techs directly.
Support Phone: 1-909-590-8308
Support Email: mailto:support@asrockamerica.com" rel="nofollow - support@asrockamerica.com
HTH
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Posted By: ptunstall
Date Posted: 25 Oct 2016 at 2:20am
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I called and they told me to email so I emailed. Thanks for the contact information, I'll reply to this thread with the info they provide!
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Posted By: ocFTW
Date Posted: 26 Nov 2016 at 6:03pm
personally I have not tried it but on both the x99 ITX board and the Z170 gaming ITX the bifurcation option is available in the BIOS but only to split to 2 8x, no option of 4 4x split
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