What servers is the M321R4GA3EB0-CWMKH compatible with?

Compatible with DDR5-supporting enterprise servers including Intel 4th/5th Gen Xeon Scalable (Sapphire Rapids/Emerald Rapids), AMD EPYC 9004/9005 Genoa/Turin series. Supports 2DPC configurations in Dell PowerEdge R760, HPE ProLiant DL380 Gen11, Lenovo ThinkSystem SR665 V3 with latest BIOS/firmware.

Does this module support 2DPC configurations?

Yes, the 2Rx8 dual rank design with registered buffering supports up to 2 DIMMs per channel (2DPC) configurations common in high-density servers. The on-module register prevents signal degradation enabling full-speed operation even with maximum memory population.

What is the voltage and power efficiency?

Operates at 1.1V DDR5 standard voltage, approximately 20-25% more efficient than DDR4's 1.2V. Low voltage reduces rack-level power/thermal requirements while maintaining 5600MT/s performance, ideal for dense compute nodes.

Is ECC functionality hardware-based?

Yes, hardware ECC with 8-bit parity signals provides automatic single-bit error correction and multi-bit detection. Active during all memory operations ensuring data integrity without CPU intervention or software overhead.

What is the DRAM chip organization?

2Rx8 organization using 20 x FBGA 2Gx8 DRAM chips for 4Gx72 total density. JEDEC-compliant x8 devices provide optimal server performance balancing density, speed, and refresh characteristics.

Can this replace DDR4 modules?

No, requires DDR5 motherboard. Physical 288-pin DIMM form factor is identical but electrical interface incompatible. Upgrade path for 4th Gen Xeon/EPYC 9004 platforms only.

M321R4GA3EB0-CWMKH - Samsung M321R4GA3EB0-CWMKH 32GB DDR5-5600 ECC RDIMM Server Memory

Name: Samsung M321R4GA3EB0-CWMKH 32GB DDR5-5600 ECC RDIMM Server Memory
Brand: Samsung
SKU: M321R4GA3EB0-CWMKH
Price: 3340 USD
Availability: InStock

M321R4GA3EB0-CWMKH - Samsung M321R4GA3EB0-CWMKH 32GB DDR5-5600 ECC RDIMM Server Memory | US IT Hardware

Product overview

The Samsung M321R4GA3EB0-CWMKH is a 32GB DDR5 RDIMM memory module designed specifically for enterprise server environments requiring high reliability and error correction. Featuring DDR5-5600 MHz speed (PC5-44800 compliant), this module utilizes 2Rx8 organization with 20 FBGA 2Gx8 DRAM chips operating at 1.1V low voltage for improved power efficiency. The registered (buffered) design includes an on-module register to enhance clock, command, and control signal integrity, supporting up to 2 ranks per DIMM and 2DPC configurations ideal for densely populated server motherboards. ECC functionality provides single-bit error correction and multi-bit error detection through 8-bit parity signals, ensuring data integrity critical for mission-critical applications like virtualization, databases, and HPC workloads. With 288-pin DIMM form factor and CL46 CAS latency, it delivers high bandwidth for memory-intensive tasks while maintaining stability under sustained server loads. Compatible with modern Intel Xeon and AMD EPYC platforms supporting DDR5, this module enables system configurations up to terabyte-scale memory capacities. Its server-grade construction supports 24/7 operation in rackmount servers from Dell PowerEdge, HPE ProLiant, and Lenovo ThinkSystem series, offering optimal performance for enterprise data centers focused on reliability and scalability.

32GB DDR5-5600 2Rx8 RDIMM.
ECC Registered 288-pin DIMM.
1.1V 20x 2Gx8 FBGA chips.
PC5-44800 server compliant.
2DPC 2-rank support.
CL46 CAS latency optimized.

Expedited and overnight shipping options are available at checkout, priced by destination and service.
Purchase orders accepted from qualified institutions.
Refunds within 14 days and replacements within 30 days of delivery with an RMA (25% restocking fee on customer-initiated returns), and every part carries our Standard 30-Day Warranty - see our return policy or contact US IT Hardware.

Featuring

Manufacturer part #	M321R4GA3EB0-CWMKH
Brand	Samsung
Condition	New
Component For	Server/workstation applications

Storage

Capacity
ECC	Yes - Error Correction Code
Ranks	2Rx8 Dual Rank
Speed	5600 MHz (2800 MHz actual clock)
Voltage	1.1 V low voltage operation
Buffered	Registered (buffered) with on-DIMM register

Compatible systems

Enterprise servers with DDR5 support from Dell, HPE, Lenovo, Supermicro. All major OS with modern kernels/bios.

Dell PowerEdge
Model: R760
Form factor: 2U Rack
Generation: 16th Gen
BIOS 2.10+ required for DDR5-5600
HPE ProLiant
Model: DL380
Form factor: 2U Rack
Generation: Gen11
iLO 6 firmware with DDR5 support
Lenovo ThinkSystem
Model: SR665
Form factor: 2U Rack
Generation: V3
XCC Enterprise V3 firmware required
Supermicro SuperServer
Model: SYS-221BT-HNR
Form factor: 2U Rack
Generation: Gen4
EPYC 9004 optimized

Best for

Virtualization Hosts
VMware vSphere/ESXi, Microsoft Hyper-V, KVM hypervisors running 100+ VMs with memory overcommitment requiring ECC for VM stability and crash prevention.
Database Servers
SQL Server, Oracle Database, PostgreSQL OLTP/OLAP workloads benefiting from ECC data integrity and high-bandwidth DDR5 for in-memory caching and query acceleration.

Details

Shipping, warranty & returns

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Samsung M321R4GA3EB0-CWMKH 32GB DDR5-5600 ECC RDIMM Server Memory