Samsung M386A8K40CM2-CVF

M386A8K40CM2-CVF Technical Overview

M386A8K40CM2-CVF is a Samsung 64GB DDR4-2933 LRDIMM (load-reduced DIMM) with a 4Rx4 organization and ECC. The module name is PC4-23466L. Samsung manufactures both the DRAM devices and the finished server module, so this part number identifies a complete factory module rather than a third-party assembly.

Buyers usually land on this page in one of two ways: they already have M386A8K40CM2-CVF printed on the module label, or they are matching a server build that needs 64GB DDR4-2933 LRDIMM 4Rx4. Either path is valid. Send the exact Samsung part number when you have it. If you only know the specification, send capacity, speed, module type and rank.

How to Read the M386A8K40CM2-CVF Part Number

Samsung server-memory codes are structured. For this module:

• M386A — Samsung DDR4 LRDIMM family
• 8K40 — 64GB density with x4 DRAM organization
• CM2 — die and package revision
• CVF — DDR4-2933 speed grade

Keeping the full ordering code M386A8K40CM2-CVF on the quote avoids mixing nearby revisions or speed grades that look similar on the label but are not the same module.

M386A8K40CM2-CVF Key Specifications

Part Number: M386A8K40CM2-CVF
Manufacturer: Samsung
Capacity: 64GB (1x 64GB)
Memory Type: DDR4 SDRAM
Module Type: LRDIMM (Load-Reduced DIMM)
Speed: 2933 MT/s
Module Name: PC4-23466L
Rank / Organization: 4Rx4
Error Correction: ECC
Voltage: 1.2V
Pin Count: 288-pin
Form Factor: Standard-height DIMM

These values are the practical checklist for server memory: capacity, DDR generation, registered vs load-reduced type, rank, organization, speed and voltage. Confirm them against the modules already installed before adding more DRAM to the same channel population.

Why LRDIMM Matters for M386A8K40CM2-CVF

M386A8K40CM2-CVF is an LRDIMM, not an RDIMM. Load-reduced modules are commonly used when the server is populated with denser or higher-rank memory. Mixing LRDIMM and RDIMM in the same memory population is usually not allowed. If the installed memory is RDIMM, do not treat this Samsung LRDIMM as a drop-in substitute. Quote an RDIMM equivalent instead, or send a photo of the current label so we can match the correct type.

Where M386A8K40CM2-CVF Is Typically Used

This Samsung 64GB DDR4-2933 LRDIMM is typically requested for:

• Direct replacement of Samsung M386A8K40CM2-CVF
• Server upgrades that specify 64GB DDR4-2933 LRDIMM, 4Rx4
• Matching existing Samsung LRDIMM already running in the system
• Refurbish and spare-stock lists that call out this exact part number

HPE, Dell, Cisco, Supermicro and Lenovo servers may ship with the same Samsung module under an OEM label. The OEM sticker does not change the fact that the module underneath is Samsung. If your label shows an HPE, Dell, Cisco, Supermicro or Lenovo number, send that number as well. We can quote the OEM-labeled pulled module or the Samsung M386A8K40CM2-CVF, depending on what the machine needs.

M386A8K40CM2-CVF Compared With Nearby Modules

Server memory part numbers are precise. A different speed suffix, rank, or RDIMM vs LRDIMM code is a different product. When comparing alternatives, match all of the following before approving a substitute:

• 64GB capacity
• DDR4-2933 / PC4-23466L
• LRDIMM
• 4Rx4
• ECC
• 1.2V / 288-pin

If any of those differ, treat the other module as a related option, not an automatic replacement for M386A8K40CM2-CVF.

What to Send for a Quote

For the fastest reply on M386A8K40CM2-CVF, include:

1. Part number: M386A8K40CM2-CVF
2. Quantity
3. Optional: server brand and model
4. Optional: clear photo of the module label
5. If you do not have the exact number: 64GB + DDR4-2933 + LRDIMM + 4Rx4

Mixed lists are welcome. You can put this Samsung module on the same request with other DDR4 or DDR5 lines, including OEM-labeled pulled memory.

Frequently Asked Questions

Is M386A8K40CM2-CVF an RDIMM?
No. It is a Samsung DDR4 LRDIMM. Confirm the installed module type before ordering.

Can I order just a few pieces?
Yes. Orders can start at two modules. Longer lists for builds or stock are normal.

What if my label shows a slightly different ending?
Send a photo of the full label. Nearby suffixes can be the same family or a different revision/speed. We will confirm before quoting.

Do you also quote OEM versions of this module?
Yes. If the server needs the original HPE, Dell, Cisco, Supermicro or Lenovo label, include that OEM number on the same request.