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04-13-2021 05:23 AM #1New ROGer Array
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RAM not detected as dual channel on ASUS ROG CROSSHAIR VIII DARK HERO
Hi,
Building a ASUS ROG CROSSHAIR VIII DARK HERO + AMD Ryzen 9 5900X + HyperX FURY HX432C16FB3K4/128 ( 4 x 32 Go ) DDR4 3200MHz
I am having problems with the RAM not being detected properly. CPUZ and bios tell me I have only 64GBytes on single channel.
CPUZ memory tab displays :
General:
Type : DDR4
Channel # Single
Size : 64 Gbytes
Uncore Frequency 1600 Mhz
Timings :
DRAM frequency 1601.3 Mhz
FSB
RAM 1:16
CL : 22.0 clocks
tRCD 22
tRP 22
tRAS 52
tRC 74
CR : IT
What can I do to have the board operate in dual channel and detect the full 128GB at proper frequency.
I figured this might have to do witht the ryzen and timings ... but me not being a hardcore tweaker I'm a bit lost ...
Thanks for helping
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04-14-2021 10:07 AM #2Moderator Array
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Hi there,
How about under BIOS? how many GB or how many RAM is detected? please share the screenshot with us
and in task manager?
Thank you.
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04-14-2021 11:50 AM #3ROG Guru: Grand Master Array Arne Saknussemm PC Specs
Arne Saknussemm PC Specs Laptop (Model) Laptop?...No way! (Model?...Jun Amaki...yes way!) Motherboard ROG ZENITH II EXTREME Processor THREADRIPPER 3960X Memory (part number) TXBD48G4000HC18FBK Graphics Card #1 GTX Titan X Graphics Card #2 SLI is dead to me Graphics Card #3 Tri SLI is even dead to Nvidia Graphics Card #4 Quad SLI is dead to everybody especially my credit card Sound Card Xonar Essence STX Monitor ASUS ROG Swift PG279Q Storage #1 Samsung 970/960/950 PRO Storage #2 2x OCZ VERTEX 3/2x WD Caviar Black 500GB / 2x WD RED 2TB/Samsung 1TBSSDs CPU Cooler Custom Loop: Dual D5s, Dual Alphacool Monsta 480s, XSPC Raystorm Neo TR4, EK TitanX WaterBlock Case Nope!...Dimastech Easy XL...let it all hang out man! Power Supply Seasonic 1000 Platinum Keyboard Corsair Strafe MK2 ROG Claymore... or Fender Rhodes Electric Piano (MKI 73) Mouse Corsair M65Pro or Speedy Gonzalez...not Mickey...don't do Disney! Headset ...firmly on neck Mouse Pad Mouse don't got his own pad man...lives with me Headset/Speakers Edifier Spinnaker...or you mean the speakers in my head...man too many voices to name them all OS Win XP, 7, 8, 8.1 and Windows 10 Spyware Edition Network Router 56k modem Accessory #1 Umm...nice tie? Accessory #2 Err...belt? Accessory #3 3 accessories?! I'm not a girl!! 
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For that density of memory...
Try 1.4v or even 1.45 v DRAM voltage and set SOC voltage to 1.125 to 1.2v range
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04-14-2021 12:02 PM #4ROG Member Array
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Hi,
Are you using 64GB x 2 in your system?
According to the manual, the mobo supports only 32GB DRAM stick. In order to get 128GB, you need to install 32GB x 4 on the mobo.
If you are using 32GB x 4, then double check whether you have inserted the DRAM sticks into the socket securely.
At this point, there is no need for you to tweak the voltage until your mobo recognize the correct DRAM capacity.
Please check the manual of your mobo.
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