SK Hynix 64GB 3200MHz DDR4 PC4-25600 ECC Registered CL22 288-Pin DIMM 1.2V Dual Rank x4 Memory Module — HMAA8GR7AJR4N-XNT4-AC

The SK Hynix HMAA8GR7AJR4N-XNT4-AC 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, it delivers enterprise-grade ECC error correction and high-capacity memory for multi-processor server platforms. The XNT4-AC suffix denotes a specific OEM/channel variant of the HMAA8GR7AJR4N SK Hynix 64GB DDR4-3200 RDIMM family.

Key Features

• 64GB high-capacity DDR4-3200MHz ECC Registered DIMM for enterprise servers
• DDR4-3200MHz (PC4-25600) for high-bandwidth server memory performance
• Registered DIMM (RDIMM) for stability in multi-DIMM server configurations
• Dual Rank x4 configuration for high-density memory deployment
• 1.2V low-voltage operation for energy-efficient server operation
• 288-pin interface — standard DDR4 RDIMM form factor

Product Specifications

• Part Number: HMAA8GR7AJR4N-XNT4-AC
• Manufacturer: SK Hynix
• Model: 64GB DDR4-3200 ECC Registered DIMM (XNT4-AC OEM variant)
• 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
• Pins: 288-Pin
• ECC: Yes

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 (Error-Correcting Code)
• OEM Variant: XNT4-AC

Performance Specifications

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

Use Cases

• High-capacity enterprise server memory for dual and quad-socket platforms
• OEM server platform memory integration
• 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 server platforms
• Functionally equivalent to HMAA8GR7AJR4N-XNT4 and other family variants
• Verify server QVL (Qualified Vendor List) before ordering

Frequently Asked Questions

What does the -AC suffix mean in HMAA8GR7AJR4N-XNT4-AC?

The -AC suffix typically indicates an alternate channel or OEM-specific variant of the SK Hynix module. It is functionally equivalent to the HMAA8GR7AJR4N-XNT4 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 XNT4-AC with other HMAA8GR7AJR4N 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 HMAA8GR7AJR4N-XNT4-AC 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.