Half of RAM Usable?

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   I just put together a new build and can't figure out why Windows is saying that only 8 of 16BG RAM is usable.
Specs:
- AMD Ryzen 2600X
- ASRock Taichi x470 (v1.10)
- G.Skill Flare X 3200 16GB (8GB x2)
- Samsung 960 EVO m.2

I haven't overclocked anything, and have done a fresh install of Windows 10 Pro. RAM is installed in A2/B2, but BIOS shows RAM is running single channel. Memory diagnostics said the RAM was ok though. Grasping at straws at this point.

Any help would be greatly appreciated!

Edited by repens - 19 May 2018 at 10:50am

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repens Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 19 May 2018 Status: Offline Points: 6	Post Options Post Reply Quote repens Report Post Thanks(0) Quote Reply Topic: Half of RAM Usable? Posted: 19 May 2018 at 10:38am
	I just put together a new build and can't figure out why Windows is saying that only 8 of 16BG RAM is usable. Specs: - AMD Ryzen 2600X - ASRock Taichi x470 (v1.10) - G.Skill Flare X 3200 16GB (8GB x2) - Samsung 960 EVO m.2 I haven't overclocked anything, and have done a fresh install of Windows 10 Pro. RAM is installed in A2/B2, but BIOS shows RAM is running single channel. Memory diagnostics said the RAM was ok though. Grasping at straws at this point. Any help would be greatly appreciated! Edited by repens - 19 May 2018 at 10:50am

ssateneth Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 19 Oct 2017 Status: Offline Points: 129	Post Options Post Reply Quote ssateneth Report Post Thanks(0) Quote Reply Posted: 19 May 2018 at 4:42pm
	RAM failed training on one module. Turn off XMP and run at 2133 speeds instead, then work your way upwards.
	MB: X399 Taichi, UEFI L3.32 VGA: EVGA 1080 Ti FTW3 PSU: Seasonic PRIME 1300 W PLATINUM CPU: AMD Ryzen Threadripper 2950X MEM: 4x16GB, 3600MHz G.Skill Trident Z F4-3600C17Q-64GTZKW

datonyb Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 11 Apr 2017 Location: London U.K. Status: Offline Points: 3154	Post Options Post Reply Quote datonyb Report Post Thanks(0) Quote Reply Posted: 19 May 2018 at 6:37pm
	99% of the time this is always ........................................ push the ram stick into the socket fully seriously these new ram sockets are not user friendly they require too much force to insert the sticks click click each end mate
	[url=https://valid.x86.fr/jpg250][/url] 3800X, powercolor reddevil vega64, gskill tridentz3866, taichix370, evga750watt gold

repens Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 19 May 2018 Status: Offline Points: 6	Post Options Post Reply Quote repens Report Post Thanks(0) Quote Reply Posted: 19 May 2018 at 7:02pm
	Thanks for the suggestions so far! XMP is off, and the RAM is running at 2400. Forcing it into something lower caused the PC to not boot up. I'm pretty sure the RAM is also seated properly - I heared clicks and everything. Both modules are flush with the MB, and I have tried installing them in A1/B1 as well with the same results.

wardog Members Profile Send Private Message Find Members Posts Add to Buddy List Moderator Group Joined: 15 Jul 2015 Status: Offline Points: 6447	Post Options Post Reply Quote wardog Report Post Thanks(0) Quote Reply Posted: 20 May 2018 at 12:40am
	1) Are both 8GB sticks recognized in the BIOS? 2) Regardless, pull and re-seat both sticks. As datonyb implies, these new lots are finicky critters.

repens Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 19 May 2018 Status: Offline Points: 6	Post Options Post Reply Quote repens Report Post Thanks(0) Quote Reply Posted: 20 May 2018 at 12:54am
	Yup, both are visible in the BIOS. I tried using only one stick at a time in A2 - one stick worked, the other didn?�t. I?�m guessing there is something wrong with one of them.