So I just finished assembling my server and am seeing some very strange behavior. For some reason only some of the 8 sticks of RAM installed are recognized in the BIOS.
I have reseated the CPU (twice actually) and ensured it is torqued to the correct specification using the provided torque wrench from AMD. Unfortunately I'm still quite confused.
There are 8 dimm slots (A though H). E through H have worked fairly reliably, at various points A through D have worked but never all at once. This tells me the dimms are healthy and I think that the CPU is likely making good contact. I thought I had narrowed it down to 2 bad RAM sticks because B & C worked while A & D didnt. I moved B & C to A & D and it appeared to work, until D dropped off after about 15 minutes.
I just updated the bios and it is still seeing a subset of the available RAM. I have never had it see more than 6 of the 8 sticks. The system has ipmi so I can see logs of when is disables a DIMM.
Any help is greatly appreciated!
CPU: Threadripper PRO 3955WX (https://www.newegg.com/amd-ryzen-threadripper-pro-3955wx/p/N82E16819113673?Item=N82E16819113673)
Motherboard: Supermicro MBD-M12SWA-TF-O (https://www.newegg.com/supermicro-m...cessor/p/N82E16813183726?Item=N82E16813183726)
RAM: 128GB 8x16GB DDR4-3200 PC4-25600 1Rx4 RDIMM ECC Registered Memory by Nemix Ram (https://www.newegg.com/p/1X5-003Z-017J3?Item=9SIA7S6AK03550)
I have reseated the CPU (twice actually) and ensured it is torqued to the correct specification using the provided torque wrench from AMD. Unfortunately I'm still quite confused.
There are 8 dimm slots (A though H). E through H have worked fairly reliably, at various points A through D have worked but never all at once. This tells me the dimms are healthy and I think that the CPU is likely making good contact. I thought I had narrowed it down to 2 bad RAM sticks because B & C worked while A & D didnt. I moved B & C to A & D and it appeared to work, until D dropped off after about 15 minutes.
I just updated the bios and it is still seeing a subset of the available RAM. I have never had it see more than 6 of the 8 sticks. The system has ipmi so I can see logs of when is disables a DIMM.
Any help is greatly appreciated!
CPU: Threadripper PRO 3955WX (https://www.newegg.com/amd-ryzen-threadripper-pro-3955wx/p/N82E16819113673?Item=N82E16819113673)
Motherboard: Supermicro MBD-M12SWA-TF-O (https://www.newegg.com/supermicro-m...cessor/p/N82E16813183726?Item=N82E16813183726)
RAM: 128GB 8x16GB DDR4-3200 PC4-25600 1Rx4 RDIMM ECC Registered Memory by Nemix Ram (https://www.newegg.com/p/1X5-003Z-017J3?Item=9SIA7S6AK03550)
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