Unable to use RAM slots C1 et C2 on TRX40 Creator

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   Ok. I'll get in touch with AMD support tomorrow and see what they say. Thanks for your feedback. I'll let you know here.

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Florian Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 12 Feb 2020 Status: Offline Points: 6	Post Options Post Reply Quote Florian Report Post Thanks(0) Quote Reply Topic: Unable to use RAM slots C1 et C2 on TRX40 Creator Posted: 13 Feb 2020 at 1:55am
	Ok. I'll get in touch with AMD support tomorrow and see what they say. Thanks for your feedback. I'll let you know here.

Xaltar Members Profile Send Private Message Find Members Posts Add to Buddy List Moderator Group Joined: 16 May 2015 Location: Europe Status: Offline Points: 28053	Post Options Post Reply Quote Xaltar Report Post Thanks(1) Quote Reply Posted: 13 Feb 2020 at 1:31am
	Based on past reports of similar issues on the forums here, I tend to suspect the CPU first. In multiple past cases the culprit ended up being the CPU after all other components had been returned/replaced. It is also one of the most expensive components in the system so risking running over your return/RMA window while you wait on other components may end up an issue.


Florian Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 12 Feb 2020 Status: Offline Points: 6	Post Options Post Reply Quote Florian Report Post Thanks(0) Quote Reply Posted: 13 Feb 2020 at 1:15am
	I did exactly that today after reading that this could be caused by bent pins. I double checked and all the pins seem fine ([URL=https://photos.app.goo.gl/goW35qdv7MxxENsEA]Pictures here[/URL]). I cleaned everything and put everything back together. The exact same issue remains. So you'd bet on a faulty CPU more than on of a faulty MB?

Xaltar Members Profile Send Private Message Find Members Posts Add to Buddy List Moderator Group Joined: 16 May 2015 Location: Europe Status: Offline Points: 28053	Post Options Post Reply Quote Xaltar Report Post Thanks(0) Quote Reply Posted: 13 Feb 2020 at 12:32am
	Looks like you are missing a channel there, most often this is because the CPU isn't properly seated/mounted. It's particularly common with Threadripper. Try reinstalling the CPU being sure it is properly seated and torqued down (to spec). While you have the CPU out, check for bent pins in the socket. If that fails then I would RMA that CPU. Edited by Xaltar - 13 Feb 2020 at 12:32am


Florian Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 12 Feb 2020 Status: Offline Points: 6	Post Options Post Reply Quote Florian Report Post Thanks(0) Quote Reply Posted: 13 Feb 2020 at 12:02am
	(I should have mentioned that I have the latest BIOS (P1.30) installed and the CPU is a Threadripper 3960x)

Florian Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 12 Feb 2020 Status: Offline Points: 6	Post Options Post Reply Quote Florian Report Post Thanks(0) Quote Reply Posted: 12 Feb 2020 at 11:58pm
	Hello guys, I recently purchased a TRX40 motherboard and I'm facing a problem with only RAM slots C1 and C2. The RAM I have is 2 pairs of Corsair Vengeance LPX 32Go (2x16Go) DDR4 3200MHz (CMK32GX4M2B3200C16). If I try to boot with only 1 stick on any on these both ports, the computer won't start (black screen). Then, if I try with 4 sticks in either A1,B1,C1,D1 or A2, B2, C2, D2: - I get the following error during the boot sequence: "Memory PMU Training error at Socket 0 Channel 4 DIMM 1" - only 3 of the stick appears in the bios (A, B and D) - CPU-Z indicates I'm in Triple Channel mode with a size of 48GB I have tried all sticks on both of the C slots and get the exact same problem every time. Using any combination of 3 sticks also always works. I also tried to boot in dual channel with a spare pair of 8GB memory (CMK16GX4M2B3000C15). This tests make me think it is not due to a faulty memory. I haven't changed any BIOS setting (factory default). I also checked the CPU pins and they all look fine. Could anybody help me on this?