Hynix 64GB 3200MHz DDR4 PC4-25600 ECC Registered CL22 288-Pin DIMM 1.2V Dual Rank x4 Memory Module – HMAA8GR7CJR4N-XNB8

SK Hynix 64GB DDR4-3200MHz PC4-25600 ECC Registered CL22 288-Pin DIMM 1.2V Dual Rank x4 Memory Module — HMAA8GR7CJR4N-XNB8

The SK Hynix HMAA8GR7CJR4N-XNB8 is a 64GB DDR4-3200MHz ECC Registered (RDIMM) server memory module operating at 1.2V with CL22 latency. Featuring a 288-pin interface and Dual Rank x4 configuration with CJR NAND die, it delivers high-capacity enterprise-grade ECC error correction for Intel Xeon Scalable (Ice Lake) and AMD EPYC server platforms. The XNB8 suffix denotes a specific production revision of the HMAA8GR7CJR4N SK Hynix 64GB DDR4-3200 CJR RDIMM family.

Key Features

• 64GB high-capacity DDR4-3200MHz ECC Registered DIMM for enterprise servers
• DDR4-3200MHz (PC4-25600) for maximum DDR4 server memory bandwidth
• Registered DIMM (RDIMM) for stability in multi-DIMM server configurations
• Dual Rank x4 (2Rx4) configuration for high-density memory deployment
• CJR NAND die — SK Hynix CJR generation memory die
• 1.2V low-voltage operation for energy-efficient server operation

Product Specifications

• Part Number: HMAA8GR7CJR4N-XNB8
• Manufacturer: SK Hynix
• OEM Status: Genuine SK Hynix OEM
• Capacity: 64GB
• Type: DDR4 ECC Registered DIMM (RDIMM)
• Speed: 3200MHz (PC4-25600)
• CAS Latency: CL22
• Voltage: 1.2V
• Rank / Organization: Dual Rank x4 (2Rx4)
• Pins: 288-Pin
• ECC: Yes
• Production Revision: XNB8

Memory Specifications

• Capacity: 64GB
• DIMM Type: Registered ECC (RDIMM)
• DDR Generation: DDR4
• Pin Count: 288-Pin
• Rank: Dual Rank (2Rx4)
• Voltage: 1.2V
• ECC: Yes
• Die Type: CJR
• Production Revision: XNB8

Performance Specifications

• Speed: DDR4-3200MHz
• Bandwidth: PC4-25600
• CAS Latency: CL22
• XMP / JEDEC: JEDEC standard

Use Cases

• High-capacity enterprise server memory for Intel Xeon Scalable (Ice Lake) platforms
• AMD EPYC server memory requiring 64GB DDR4-3200 RDIMM
• Virtualization hosts requiring large DDR4-3200 RDIMM memory pools
• Database and in-memory computing workloads

Compatibility

• Compatible with servers supporting DDR4-3200 ECC Registered (RDIMM) memory
• Compatible with Intel Xeon Scalable (Ice Lake) and AMD EPYC platforms
• Functionally equivalent to HMAA8GR7CJR4N-XN, XNT4, XNT8, and XNBG variants
• Verify server QVL (Qualified Vendor List) before ordering

Frequently Asked Questions

What is the difference between HMAA8GR7CJR4N-XNB8 and XNBG?

Both are SK Hynix 64GB DDR4-3200 ECC RDIMM CJR die modules. XNB8 and XNBG are different production revision suffixes — they are functionally equivalent with the same specifications.

Is this module compatible with Intel Xeon Ice Lake processors?

Yes, it is compatible with Intel Xeon Scalable Ice Lake server platforms supporting DDR4-3200 ECC RDIMM. Verify your specific server”s QVL before ordering.

Can I mix XNB8 with other HMAA8GR7CJR4N revision variants?

Mixing production revisions of the same module family is generally supported, but consult your server documentation and QVL for mixed-revision DIMM configuration guidance.

The SK Hynix HMAA8GR7CJR4N-XNB8 64GB DDR4-3200 ECC Registered DIMM delivers high-capacity, enterprise-grade server memory performance. Order today for genuine SK Hynix RDIMM quality with proven ECC reliability.