Intel Motherboards - ASRock Fatal1ty Z370 Gaming-ITX/ac Support

Print Page | Close Window

ASRock Fatal1ty Z370 Gaming-ITX/ac Support

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=12080
Printed Date: 04 Aug 2025 at 10:42pm
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com

Topic: ASRock Fatal1ty Z370 Gaming-ITX/ac Support

Posted By: Coool
Subject: ASRock Fatal1ty Z370 Gaming-ITX/ac Support
Date Posted: 03 Aug 2019 at 4:26am

Recently bought [URL=http://www.asrock.com/mb/Intel/Fatal1ty%20Z370%20Gaming-ITXac]ASRock Fatal1ty Z370 Gaming-ITX/ac[/URL] MB. Was looking for 32GB RAM modules. Asked at ASRock Support Form. Still no answer.

Will Samsung M378A4G43MB1-CTD, Corsair CMK32GX4M1A2666C16 and CMK32GX4M1D3000C16 (all corresponding kits 32GB x 2, 32GB x 4, 32GB x 8) work on ASRock Fatal1ty Z370 Gaming-ITX/ac?

PCI-E bifurcation 1x16x to 4x4x

-------------
http://forum.asrock.com/forum_posts.asp?TID=3211" rel="nofollow - ASRock Rack EP2C602-4L/D16 Support
http://forum.asrock.com/forum_posts.asp?TID=12080" rel="nofollow - ASRock Fatal1ty Z370 Gaming-ITX/ac Support

Replies:

Posted By: ASRock_TSD
Date Posted: 06 Aug 2019 at 11:43am

Dear Coool,

Thank you for choosing ASRock.

Regarding your question, we have test Samsung M378A4G43MB1-CTD at our lab, can boot up with Fatal1ty Z370 Gaming-ITX/ac BIOS P4.00 properly.

About PCI-E bifurcation, Intel 300 series only supports x16 to x8x8.
Four x4 only support at HEDT like x299 chipset.

Thank you!
Yours truly,
ASRock TSD

Posted By: Coool
Date Posted: 12 Aug 2019 at 8:18pm

Good to know M378A4G43MB1-CTD module is supported. Do you plan to test Corsair modules too?

Isn't CPU responsible about PCI-E bifurcation. Based on
[URL=http://www.intel.com/content/www/us/en/intelligent-systems/maho-bay/core-i7-pcie-slot-bifurcation-demo.html]Configure PCI-Express* Lanes for Simultaneous Applications[/URL]?! Table 2-12. PCI Express* Bifurcation and Lane Reversal Mapping at page 29 states these possible PCI Express Configurations - Up to 1x16, 2x8, 1x8+2x4 and Table 6-7. Reset and Miscellaneous Signals at page 109 reference CFG[6:5]: PCI Express* Bifurcation options needed configure in BIOS prior MB initialization in [URL=https://www.intel.com/content/dam/www/public/us/en/documents/datasheets/8th-gen-core-family-datasheet-vol-1.pdf]8th and 9th Generation Intel® Core??Processor Families Datasheet, Volume 1 of 2[/URL].

How MB manufacturers realizing Hot-Plug PCI-E support?

Thanks.

-------------
http://forum.asrock.com/forum_posts.asp?TID=3211" rel="nofollow - ASRock Rack EP2C602-4L/D16 Support
http://forum.asrock.com/forum_posts.asp?TID=12080" rel="nofollow - ASRock Fatal1ty Z370 Gaming-ITX/ac Support

Posted By: Coool
Date Posted: 12 Aug 2019 at 8:28pm

PCI-E 1x16x to 2x8x port enabling Riser Card Support option UEFI

configure option CFG[6:5] - 10 (2 x8 mode). By default option CFG[6:5] - 11 to operate in 1x16 mode.

Thanks.

-------------
http://forum.asrock.com/forum_posts.asp?TID=3211" rel="nofollow - ASRock Rack EP2C602-4L/D16 Support
http://forum.asrock.com/forum_posts.asp?TID=12080" rel="nofollow - ASRock Fatal1ty Z370 Gaming-ITX/ac Support

Posted By: Coool
Date Posted: 12 Aug 2019 at 8:35pm