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ARock x399 Taichi memory issue

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BrigitteA View Drop Down
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Joined: 14 Feb 2019
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    Posted: 14 Feb 2019 at 1:59am
Hi dear people
I have a problem with my memory'

I have build a new system 4 days ago.
I have 2X 16G placed in bank A2 / B2 but My second memory is not shown in the bios and indicates 16G Dual channel mode? Windows 10 also sees only 16G but CPU-Z does see 32G

I have 2x 16g of Kingston KVR21N15D8 / 16 and are on the list as 2/4/8
I tested the rams and they work fine, I also update the bios of the lastest firmware and I have cleared the CMOS, but nothing helps.

I just want my 32G how hard can it be?

Asrock X399 Taichi (Bios v. P.350)
AMD Ryzen Threadripper 1920X
2X 16G Memory (Kingston KVR21N15D8/16)
NVidia GeForce RTX 2070
Windows 10 Pro 64bit
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xhue View Drop Down
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Joined: 17 Aug 2018
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Post Options Post Options   Thanks (0) Thanks(0)   Quote xhue Quote  Post ReplyReply Direct Link To This Post Posted: 14 Feb 2019 at 6:24am
Well, for one it's ASRock. Guys are not known for solid FW/SW implementations, contrary to what their name may suggest.

On the topic - 2 things come to mind:

- misplaced CPU. Threadrippers are not novice-friendly. On top of that there are some bad Foxconn sockets which are extra nasty. Bad contact between CPU and some socket pins can cause issues. Try re-seating the CPU.

- you can try and run the sticks @ 2133 for starters and see if mobo and Win pick 32GB. Then I suggest you memetest each RAM stick individually at both XMP and 2133 (or whatever is their JEDEC default).

It could be many other things, though - from missing aux CPU power cable to faulty mobo, and everything in between.

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