Samsung M393A4K40DB3-CWE 32GB DDR4-3200 2Rx4 RDIMM Server Memory

Samsung M393A4K40DB3-CWE is a 32GB DDR4 registered DIMM rated at 3200 MT/s (PC4-25600) with CL22 timing. It is a dual-rank module using x4 DRAM, runs at 1.2V and includes ECC. In Samsung's numbering, M393 marks a registered DDR4 module and the CWE suffix marks the 3200 MT/s speed grade.

As a Samsung-branded module it is not tied to one server maker, and we have not found a manufacturer or server-OEM source listing specific supported servers, so we do not publish one. In practice, check your server's memory guide for a 32GB 2Rx4 DDR4-3200 RDIMM. Platforms based on 3rd Gen Xeon Scalable and AMD EPYC 7002/7003 processors support 3200 MT/s. 2nd Gen Xeon Scalable systems run it at 2933 MT/s, and older DDR4 platforms run it at their own maximum.

Before ordering:

• Check whether your server requires OEM-branded memory. HPE, Dell and Lenovo validate their own part numbers, and their support teams may ask for them.
• Match rank and width with the installed memory. Do not mix 2Rx4 and 2Rx8 modules without checking the server's population rules.
• Module labels may carry extra characters after -CWE; ask us which variant your quote covers.

Do not combine RDIMMs with LRDIMMs or unbuffered memory in the same server. This module suits white-box and other servers that accept standard DDR4 RDIMMs, and labs that standardize on one memory part across mixed hardware. ICT Devices can quote single modules or larger lots; include your server model so we can check the match.