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64GB RAM Replacement for Samsung M393A8K40B22-CWD | DDR4 2666MHz PC4-21300 ECC RDIMM 2S2Rx4 (4Rx4) Server Memory
- 64GB ( 1x 64GB Module ) | DDR4 2666 MHz ( PC4-21300 ) | DDR4 DIMM ( 288-Pin ) | ECC RDIMM ( Registered DIMM ) | 1.2V - DDR4 Standard Voltage
- Compatible Equivalent for Samsung M393A8K40B22-CWD
- High performance Memory RAM upgrade designed for Server/Workstation Systems
- All modules undergo quality assurance testing to ensure dependable and reliable performance | Please verify the supported memory (RAM) specifications of your system prior to purchase to ensure compatibility
- A-Tech provides a Lifetime Warranty for all orders & offers complimentary United States based Tech Support before, during, & after your purchase
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Overview
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An A-Tech Memory (RAM) upgrade is an easy, quick way to boost your system's performance by speeding up loading times, improving system responsiveness, and increasing your system's ability to handle higher workloads. Take on more and multitask with ease with a simple and affordable A-Tech Memory upgrade!
Compatible Memory Module Replacement for Samsung:
M393A8K40B22-CWD
Memory Specs
Memory Size: 64 GB ( 1 x 64 GB Module )
Memory Type: DDR4
Form Factor: DIMM ( 288 Pin )
Speed: DDR4 2666 MHz ( PC4-21300 )
ECC Type: ECC RDIMM ( Registered DIMM )
Voltage: 1.2V
Ensured Reliability
All A-Tech Memory products are rigorously tested to ensure that your memory meets our stringent quality and performance standards.
Lifetime Warranty
Purchase with confidence knowing that all A-Tech orders are backed with our Lifetime Warranty.
US Based Technical Support
Need help? Have questions? Our 5 star United States based support team is here to help before, during, and after your purchase to make sure you are completely satisfied with your A-Tech Memory!
Compatible Memory Module Replacement for Samsung:
M393A8K40B22-CWD
Memory Specs
Memory Size: 64 GB ( 1 x 64 GB Module )
Memory Type: DDR4
Form Factor: DIMM ( 288 Pin )
Speed: DDR4 2666 MHz ( PC4-21300 )
ECC Type: ECC RDIMM ( Registered DIMM )
Voltage: 1.2V
Ensured Reliability
All A-Tech Memory products are rigorously tested to ensure that your memory meets our stringent quality and performance standards.
Lifetime Warranty
Purchase with confidence knowing that all A-Tech orders are backed with our Lifetime Warranty.
US Based Technical Support
Need help? Have questions? Our 5 star United States based support team is here to help before, during, and after your purchase to make sure you are completely satisfied with your A-Tech Memory!
Warranty & Returns
Warranty, Returns, And Additional Information
Warranty
- Please contact the Seller directly for warranty information. Warranty information may also be found on the Manufacturer's website.
- CONTACT
Return Policies
- Return for refund within: 30 days
- Return for replacement within: 30 days
- This item is covered by A-Tech Return Policy
Manufacturer Contact Info
- For a directory of all our manufacturers, please click below.
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The A-Tech 64GB DDR4-2666 ECC Registered DIMM is a single 288-pin server memory module for compatible servers and workstations that support PC4-21300, 1.2V RDIMM memory.
Recommended For
- Server or workstation owners replacing or expanding memory in a system that explicitly supports 64GB DDR4-2666 ECC RDIMMs, including this module’s rank and organization. Check the system’s supported-memory list and installation rules before buying.
- Homelab operators running a compatible DDR4 server who want more memory for several virtual machines or services on one host; a community report describes this 64GB Samsung module working in an EPYC server, but compatibility still depends on the exact platform.
- IT teams or server owners adding capacity one module at a time to supported systems, provided the server’s memory population rules allow the added capacity and rank alongside the installed DIMMs.
Real-World Use Scenarios
- On a compatible virtualization server, an administrator adding memory to a Proxmox or ESXi host can allocate more RAM across simultaneously running VMs, provided memory capacity is the limiting resource.
- For a home lab running VMs and self-hosted services, adding compatible memory can give the host more room to run those workloads together; the benefit depends on the server’s total configuration and actual memory use.
- For a server running database workloads, this module can add memory capacity for planned database or virtual-machine allocations; it is most useful when the workload is constrained by RAM, and does not by itself guarantee faster queries.
- When replacing a failed or undersized server DIMM, an IT administrator can use a 64GB registered ECC module to restore or increase memory capacity—but should first confirm the server supports this memory type, capacity, and rank configuration.