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Catalog/Samsung/DDR4 RDIMM/M393A8G40MB2-CVFBY
Samsung · Server memory

M393A8G40MB2-CVFBY

Verified

64 GB DDR4-2933 ECC Registered DIMM (RDIMM), dual-rank ×4. Sold by Dell under its own part numbers, all cross-referenced below.

independent sources How we verify →
Specifications JEDEC / manufacturer data
Memory typeDDR43 sources
Module typeRDIMM · ECC Registered DIMM3 sources
Capacity64 GB3 sources
SpeedDDR4-2933 · PC4-234643 sources
Organization / rank2Rx43 sources
CAS latency213 sources
Voltage1.2 VJEDEC standard for DDR4
Form factor288-pin DIMMstandard for DDR4 RDIMM
OEM part numbers same module, OEM-branded
VendorOEM part numberVerification
Dell0W403Ycatalog
OEM cross-references are compiled from distributor cross-reference data and OEM documentation. Verify against your vendor's parts list before ordering.
Fits these servers 42 of 111 platforms
Spec match covers every DDR4 RDIMM platform we track, so the spec-match rows above are a sample across vendors: 69 further platforms also match this module on spec. A server missing from this table is not a compatibility limit. Browse all servers →
Confirmed = listed in the vendor's memory documentation for that server. Vendor match = the vendor's own part cross-reference matches this module and its speed is validated for the platform; the module is not taken from that server's memory list. Spec match = this module meets the platform's JEDEC requirements (generation, form factor, validated speed); interchangeability is spec-based, not per-server testing. Confirm against your server's qualified parts list before ordering.
Also marked as same part · spec-neutral suffix
Part number
M393A8G40MB2-CVF
These part numbers are the same module. The trailing suffix encodes the DRAM die-rev / on-DIMM sourcing, not the JEDEC spec.
Compatible alternatives any brand · same JEDEC specification
ManufacturerPart numberSpec
KingstonKSM29RD4/64HAR64 GB · DDR4-2933 · RDIMM · 2Rx4
KingstonKSM29RD4/64MER64 GB · DDR4-2933 · RDIMM · 2Rx4
MicronMTA36ASF8G72PZ-2G964 GB · DDR4-2933 · RDIMM · 2Rx4
SamsungM393A8G40AB2-CVF64 GB · DDR4-2933 · RDIMM · 2Rx4
SK hynixHMAA8GR7AJR4N-WM64 GB · DDR4-2933 · RDIMM · 2Rx4
SK hynixHMAA8GR7MJR4N-WM64 GB · DDR4-2933 · RDIMM · 2Rx4
Modules match on all key specifications (type, form factor, capacity, speed, rank organization) and are generally interchangeable in servers that accept this spec. Interchangeability is based on matching JEDEC specifications, not per-server testing. Confirm against your server vendor's qualified parts list. View the full family →
Frequently asked
Is Dell 0W403Y the same module as M393A8G40MB2-CVFBY?
Yes. Dell resells this Samsung module under part number 0W403Y. The physical module is identical: OEM part numbers are branding, not different hardware.
Can I use a Kingston or Micron module instead?
In most servers, yes: KSM29RD4/64HAR (Kingston), KSM29RD4/64MER (Kingston), MTA36ASF8G72PZ-2G9 (Micron) match this module on every key specification (64 GB, DDR4-2933, RDIMM, 2Rx4). Keep vendors consistent within a memory bank, and check your server's qualified parts list for edge cases.
What servers take M393A8G40MB2-CVFBY?
Dell PowerEdge C6420, Dell PowerEdge C6520, Dell PowerEdge C6525, Dell PowerEdge FC640, among others, match it through the vendor's own part cross-reference (e.g. Dell 0W403Y) with a validated speed. Other DDR4 RDIMM platforms generally accept it too; verify against the server's qualified parts list.