X399 board Maximum RAM
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=5964
Printed Date: 19 Jul 2025 at 10:53am
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: X399 board Maximum RAM
Posted By: boukenger
Subject: X399 board Maximum RAM
Date Posted: 01 Sep 2017 at 3:02pm
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" rel="nofollow - With the introduction of 32GB non-ECC RAM and 32/64GB ECC RAM Modules. Do the ASRock X399 motherboards support 256+ GB of RAM or would still be limited to 128GB? |
Replies:
Posted By: ASRock_TSD
Date Posted: 01 Sep 2017 at 5:33pm
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Dear Boukenger, Greetings, this is ASRock TSD. Fatal1ty X399 Professional Gaming and X399 Taichi support DDR4 3600+(OC)/3200(OC)/2933(OC)/2667/2400/2133 ECC & non-ECC, un-buffered memory(U-DIMM). And X399 series motherboards support maximum capacity of system memory is 128GB. Please refer below link for detailed specification. Fatal1ty X399 Professional Gaming: http://www.asrock.com/MB/AMD/Fatal1ty%20X399%20Professional%20Gaming/index.asp#Specification" rel="nofollow - http://www.asrock.com/MB/AMD/Fatal1ty%20X399%20Professional%20Gaming/index.asp#Specification X399 Taichi: http://www.asrock.com/mb/AMD/X399%20Taichi/index.asp#Specification" rel="nofollow - http://www.asrock.com/mb/AMD/X399%20Taichi/index.asp#Specification Thanks! All the best, ASRock TSD |
Posted By: O_and_N
Date Posted: 06 Sep 2017 at 11:25pm
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Double post,my bad(fast clics)
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Posted By: O_and_N
Date Posted: 06 Sep 2017 at 11:26pm
I am sorry for the bump,but why do you say 128gb only?The threadripper can go up to 1tb of ram.Now i doubt anyone will do it but just like the xeons,woudnt lets say 256gb ram be a realistic number on the x399 taichi/gaming?(no oc)
Thank you  |
ASRock_TSD wrote:Posted By: MisterJ
Date Posted: 06 Sep 2017 at 11:49pm
O_and_O, according to both specifications the restrictions are BIOS:
I supposed the board vendor could ask for more. You would need to do that with ASRock as most here are users. ASRock_TSD is real technical support in Taiwan - good place to lobby. Enjoy, john. ------------- Fat1 X399 Pro Gaming, TR 1950X, RAID0 3xSamsung SSD 960 EVO, G.SKILL FlareX F4-3200C14Q-32GFX, Win 10 x64 Pro, Enermx Platimax 850, Enermx Liqtech TR4 CPU Cooler, Radeon RX580, BIOS 2.00, 2xHDDs WD |
Posted By: datonyb
Date Posted: 07 Sep 2017 at 1:24am
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mister j sorry to point out the quote is refering to the 128 meg of onboard bios (eg the bios chip ram i believe) not the ability to run the system ram of 128 gig allthough i presume we both remember having systems using far far less than 128 meg of system ram (in my case i recall a 8 meg i fitted ,as an upgrade haha) ------------- [url=https://valid.x86.fr/jpg250]  [/url]3800X, powercolor reddevil vega64, gskill tridentz3866, taichix370, evga750watt gold |
Posted By: MisterJ
Date Posted: 07 Sep 2017 at 2:19am
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Oops, I am sure you are correct, datonyb. Boukenger does need to plead with ASRock. Thanks and enjoy, John. EDIT: It even says 128 Mb. ------------- Fat1 X399 Pro Gaming, TR 1950X, RAID0 3xSamsung SSD 960 EVO, G.SKILL FlareX F4-3200C14Q-32GFX, Win 10 x64 Pro, Enermx Platimax 850, Enermx Liqtech TR4 CPU Cooler, Radeon RX580, BIOS 2.00, 2xHDDs WD |
Posted By: datonyb
Date Posted: 07 Sep 2017 at 3:09am
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john i confess i had to read your answer at least 3 times (saying 128mb) as i was convinced you dont make errors when posting ,so i wasnt understanding what i thought i did haha http://forum.asrock.com/forum_topics.asp%3cFID=12&title=amd-motherboards" rel="nofollow - ------------- [url=https://valid.x86.fr/jpg250] [/url]3800X, powercolor reddevil vega64, gskill tridentz3866, taichix370, evga750watt gold |
Posted By: ASRockRocks
Date Posted: 15 Sep 2018 at 4:32am
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" rel="nofollow - Hello, Is the 128GB RAM limit electrical or BIOS or ...? With the new 2990WX the per thread memory amount is not very large. If the Taichi will never (or can't) support more, is there a MOBO on the horizon that can accommodate substantial amounts of memory? (FYI, My server has 512GB and I also own multiple Taichi MOBOs) Thanks
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Posted By: kerberos_20
Date Posted: 15 Sep 2018 at 8:31am
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https://en.wikichip.org/wiki/amd/ryzen_threadripper/1950x" rel="nofollow - https://en.wikichip.org/wiki/amd/ryzen_threadripper/1950x
the cpu itself support up to 1tb of memory.so i safely say that it will support 256gb if available. maybe bios update will be needed as 128gb was max tested when it was made ------------- http://valid.x86.fr/diq4l4" rel="nofollow">  http://www.userbenchmark.com/UserRun/47132492" rel="nofollow - userbenchmark |