Dual channel issue
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=8010
Printed Date: 20 Jul 2025 at 2:31pm Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: Dual channel issue
Posted By: Krakeniko
Subject: Dual channel issue
Date Posted: 11 Mar 2018 at 2:25am
Hello guys,
I made a new build with: - AsRock Fatality AB350 Gaming k4 - Ryzen 5 1600X - G.Skill Flare X 3200 C14 2x8gb (F4-3200C14D-16GFX) - nVidia GtX 1070 ti MSI gaming 8X
I have updated bios to 4.70.
I tried different ram configuration but i can't get dual channel configuration. I don't understand what is the problem :(
A1 A2: workstation switch on and switch off after many seconds continuosly A1 B1: single channel configuration A2 B2: single channel configuration B1 B2: as first case
And Windows 10 says that use 8gb and 8gb dedicated to hardware
Thanks in Advance!
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Replies:
Posted By: datonyb
Date Posted: 11 Mar 2018 at 2:28am
use a2 and b2
most of the time its the ram stick not fully inserted (they require far more pressure than we would like to use)
rest of the time its the cpu not seated properly
clear the cmos after each fix attempt
------------- [url=https://valid.x86.fr/jpg250] [/url]
3800X, powercolor reddevil vega64, gskill tridentz3866, taichix370, evga750watt gold
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Posted By: wardog
Date Posted: 11 Mar 2018 at 4:54am
Mis-matched sticks will present this too. Single channel with half being seen/usable in Wndows.
Sometimes even one that is fritzing out.
Great reply datonyb. Thank you.
Your "clear the cmos after each fix attempt" cannot be stressed enough here.
BTW, my hoity toity mem? You don't want to know what they booted into Windows last night was. I don't expect them to be stable at that, which the weren't, but this new AGESA gave me some more headroom so long I didlle with timings/voltage.

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Posted By: Krakeniko
Date Posted: 11 Mar 2018 at 7:32pm
Thank you guys.
Sorry, my english is so bad. I wanted to say that Windows recognize 16gb but 8 are dedicated to hardware and i don't understand why:
Cpu-z:
https://ibb.co/fuygTS" rel="nofollow">
Windows 10 info:
https://ibb.co/hCES2n" rel="nofollow">
Windows 10 task manager:
https://ibb.co/bOTWTS" rel="nofollow">
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Posted By: MisterJ
Date Posted: 11 Mar 2018 at 11:54pm
Krakeniko, during POST, memory is tested and only the sticks that pass are given to Windows. What yours is saying is one of the two sticks is not passing the tests. Please put one stick in A1 and see if it will boot, then try A2 and the rest. Try all slots with the other stick also. This will give you a picture of a bad stick and/or a bad slot. If one stick is always bad but all slots are good, then RMA the memory kit. If one or more slots are bad, you may need to RMA the board. 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
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