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32GB RAM Replacement for Samsung M393A4K40BB2-CTD, M393A4K40CB2-CTD, M393A4K40DB2-CTD | DDR4 2666MHz PC4-21300 ECC RDIMM 2Rx4 Server Memory
- 32GB ( 1x 32GB Module ) | DDR4 2666 MHz ( PC4-21300 ) | DDR4 DIMM ( 288-Pin ) | ECC RDIMM ( Registered DIMM ) | 1.2V - DDR4 Standard Voltage
- Compatible Equivalent for Samsung M393A4K40BB2-CTD, M393A4K40CB2-CTD, M393A4K40DB2-CTD
- 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:
M393A4K40BB2-CTD
M393A4K40CB2-CTD
M393A4K40DB2-CTD
Memory Specs
Memory Size: 32 GB ( 1 x 32 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:
M393A4K40BB2-CTD
M393A4K40CB2-CTD
M393A4K40DB2-CTD
Memory Specs
Memory Size: 32 GB ( 1 x 32 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.
- Manufacturers Directory
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A-Tech 32GB DDR4-2666 ECC Registered DIMM is a single 288-pin, 2Rx4 server memory module, suitable for upgrading or replacing RAM in compatible server and workstation systems that support these specifications.
Recommended For
- Server administrators replacing or adding memory in a DDR4 server that supports 32GB, 2666MHz ECC Registered RDIMMs and the module’s 2Rx4 rank configuration.
- Workstation operators running memory-intensive work—such as data processing or multiple simultaneous workloads—on a platform that supports ECC Registered DDR4 memory.
- Homelab or virtualization users expanding RAM in a compatible DDR4 server or workstation to accommodate more memory-resident services or virtual machines.
- Owners of a server listed for compatible Samsung M393A4K40BB2-CTD-family memory who want a single 32GB replacement module rather than a full memory kit.
Real-World Use Scenarios
- A home-lab operator adds memory to a compatible Proxmox host to run more virtual machines or containers at once; the added capacity can reduce memory pressure when RAM is the limiting resource, though each guest still needs an appropriate allocation.
- A TrueNAS or other ZFS server gets additional memory for file-sharing services, apps, or virtual machines; ZFS can also use available RAM for its read cache, which may help with frequently accessed data but depends on the workload.
- A small business or lab expands a supported server running database or application workloads; extra installed RAM can provide more memory headroom, but the benefit depends on whether those workloads are constrained by memory.
- A homelab user consolidates always-on services—such as media, automation, or development services—on a server; added capacity can leave more room for those services and any VMs running alongside them.
- An administrator replaces a failed or undersized module in a compatible server or workstation; a supported 32GB RDIMM can restore or increase installed memory capacity, but RDIMM support and system-specific memory rules must be checked before installation.