X299 taichi + 4 GPU
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=10738
Printed Date: 05 Aug 2025 at 3:38pm
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Topic: X299 taichi + 4 GPU
Posted By: wrThomas
Subject: X299 taichi + 4 GPU
Date Posted: 22 Jan 2019 at 12:45am
Hi,
I'm looking at the documentation for the X299 taichi motherboard, and would like some clarifications before buying. It will be used with a 44lanes CPU.
The documentation is stating the following:
* If you install CPU with 44 lanes, PCIE1/PCIE2/PCIE3/PCIE5 will run at x16/x8/
x16/x0 or x8/x8/x16/x8.
In the PCI-e slots configuration (p.20) there is nothing about the PCI-e lanes allocation for 4GPUs. Section 2.9 (p.32) is talking about Quad SLI things but there is no section about the Quad SLI. Actually I don't really need SLI, just 4 GPUs.
Is this motherboard able to handle 4 GPUS at at least x8 ? And if so, how will the m.2 slots behave ? I'm open to go for a 2.5 inches sata ssd.
Thanks,
Thomas.
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Replies:
Posted By: ASRock_TSD
Date Posted: 22 Jan 2019 at 10:17am
Dear wrThomas,
Regarding your question, X299 Taichi can support 4 GPU when 44 lanes CPU is in used.
The 4 GPU will work at one x16 mode and three x8 mode.
Because all the M.2 slots don't share lanes with PCIe slots, when 4 GPU connected, three M.2 slots can be used.
*If M2_1 is occupied by a SATA-type M.2 device, SATA3_1 will be disabled.
*If M2_2 is occupied by a SATA-type M.2 device, SATA3_0 will be disabled.
*If M2_3 is occupied by a SATA-type M.2 device, SATA3_7 will be disabled.
https://www.asrock.com/MB/Intel/X299%20Taichi/index.asp#Specification
Thank you!
Yours truly,
ASRock TSD
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