X399 taichi recognizes only 24G out of 32G memory

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   I had the same problem:
Mainbord Asrock Taichi x399
CPU: TR 1950X
RAM: GSkill Aegis 3200, 16GB, 2 bars

BIOS showed only one RAM slot populated, 8GB.

Then I tried a different RAM: Corsair Venegeance 16GB, 2 bars
Result: same problem (1 slot populated, 8GB only)

Then I tried another RAM: GSkill Flare 16GB, 2 bars
Result: same problem (1 slot populated, 8GB only)

Then I removed the CPU and re-installed it again (because I just read
this thread)
Result: 2 slots populated, 16GB. Finally!!

Thank you for your support! Re-installing the CPU seems to solve
the problem with the unpopulated ram slots.

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msteen Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 09 Aug 2021 Status: Offline Points: 15	Post Options Post Reply Quote msteen Report Post Thanks(0) Quote Reply Posted: 09 Aug 2021 at 11:21pm
	I had the same problem: Mainbord Asrock Taichi x399 CPU: TR 1950X RAM: GSkill Aegis 3200, 16GB, 2 bars BIOS showed only one RAM slot populated, 8GB. Then I tried a different RAM: Corsair Venegeance 16GB, 2 bars Result: same problem (1 slot populated, 8GB only) Then I tried another RAM: GSkill Flare 16GB, 2 bars Result: same problem (1 slot populated, 8GB only) Then I removed the CPU and re-installed it again (because I just read this thread) Result: 2 slots populated, 16GB. Finally!! Thank you for your support! Re-installing the CPU seems to solve the problem with the unpopulated ram slots.

Xaltar Members Profile Send Private Message Find Members Posts Add to Buddy List Moderator Group Joined: 16 May 2015 Location: Europe Status: Offline Points: 22748	Post Options Post Reply Quote Xaltar Report Post Thanks(0) Quote Reply Posted: 10 Aug 2021 at 12:05am
	Indeed, an improperly seated CPU is almost always the issue with RAM detection on Threadripper systems. The CPU is just so large that the slightest uneven pressure can cause a corner to be lifted slightly causing poor/no connection of some of the pins.