Four manufacturers make modules at this exact specification. They match on every key parameter and are generally interchangeable: a buyer who needs "128 GB DDR5-6400 registered" can usually accept any of them.
| Manufacturer | Part number | CAS | OEM refs | Data |
|---|---|---|---|---|
| Kingston | KSM64R52BD4-128MB | 52 | — | ✓ verified |
| Micron | MTC40F2047S1RC64BB1 | 52 | Supermicro | ✓ verified |
| Micron | MTC40F2047S1RC64BB1R | 52 | — | ✓ verified |
| Samsung | M321RAJA0MB2-CCP | 52 | — | ✓ verified |
| SK hynix | HMCT04MHBRC | 52 | Supermicro | ✓ verified |
Practical rule: servers accept these modules interchangeably in almost all cases. Keep one vendor within a memory bank and match existing modules when expanding, rather than mixing brands side by side.
Post a request for this spec and VAT-verified suppliers quote whichever brand they actually stock: Kingston, Micron, Samsung or SK hynix. You choose from real offers.