T1Deep (Chinese dual EPYC) motherboard does NOT support LRDIMMs - save yourself the headache

Hey everyone,

Just wanted to share my experience so nobody else wastes their time and money like I did.

The setup:
I bought a T1Deep dual-socket EPYC motherboard and was planning to populate it with 16x SK Hynix HMA84GL7MMR4N-TF (32GB DDR4-2133 LRDIMM) sticks alongside two AMD EPYC 7352 CPUs.

The problem:
As soon as I booted with even a single LRDIMM installed, I started getting a flood of correctable ECC errors, which eventually escalated into uncorrectable ECC errors. Tried different slots, tried one CPU with 8 DIMMs, tried a single DIMM - same result every time. Meanwhile, my 64GB RDIMMs work perfectly fine on the same board. Zero errors whatsoever.

The vendor's response:
I contacted T1Deep support, and to their credit they were polite and responsive. However, the answer was essentially:

In other words: LRDIMMs are not tested, not validated, and not supported. They don't even have LRDIMMs on hand to test with. This is nowhere on the product page or in the specs.

The takeaway:
If you're eyeing a T1Deep board (or likely any similar budget Chinese EPYC board) and planning to use cheap LRDIMM sticks from eBay to max out your RAM - don't. Stick with RDIMMs. The board simply doesn't support LRDIMMs, and the vendor has confirmed it.

Hope this saves someone a few hours of troubleshooting and a return shipment.