SK Hynix 32GB DDR4-3200MHz PC4-25600 ECC Unbuffered CL22 288-Pin DIMM 1.2V Dual Rank x8 Memory Module — HMAA4GU7AJR8N-XNT0

The SK Hynix HMAA4GU7AJR8N-XNT0 is a 32GB DDR4-3200MHz ECC Unbuffered DIMM (UDIMM) server memory module operating at 1.2V with CL22 latency. Featuring a 288-pin interface and Dual Rank x8 (2Rx8) configuration with AJR NAND die, it delivers ECC error correction in an unbuffered form factor for workstation and server platforms supporting ECC UDIMM memory. The XNT0 suffix denotes a specific production revision of the HMAA4GU7AJR8N SK Hynix 32GB DDR4-3200 AJR ECC UDIMM family.

Key Features

• 32GB DDR4-3200MHz ECC Unbuffered DIMM for workstation and server platforms
• DDR4-3200MHz (PC4-25600) for maximum DDR4 memory bandwidth
• ECC Unbuffered DIMM (UDIMM) — ECC without register buffer
• Dual Rank x8 (2Rx8) configuration
• AJR NAND die — SK Hynix AJR generation memory die
• 1.2V low-voltage operation for energy-efficient operation

Product Specifications

• Part Number: HMAA4GU7AJR8N-XNT0
• Manufacturer: SK Hynix
• OEM Status: Genuine SK Hynix OEM
• Capacity: 32GB
• Type: DDR4 ECC Unbuffered DIMM (UDIMM)
• Speed: 3200MHz (PC4-25600)
• CAS Latency: CL22
• Voltage: 1.2V
• Rank / Organization: Dual Rank x8 (2Rx8)
• Pins: 288-Pin
• ECC: Yes
• Production Revision: XNT0

Memory Specifications

• Capacity: 32GB
• DIMM Type: ECC Unbuffered (UDIMM)
• DDR Generation: DDR4
• Pin Count: 288-Pin
• Rank: Dual Rank (2Rx8)
• Voltage: 1.2V
• ECC: Yes
• Die Type: AJR
• Production Revision: XNT0

Performance Specifications

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

Use Cases

• Workstation memory for AMD Ryzen Pro and Intel Xeon W platforms supporting ECC UDIMM
• Entry-level server platforms supporting ECC Unbuffered DIMM
• High-capacity ECC workstation memory for professional applications
• AMD EPYC platforms supporting ECC UDIMM configurations

Compatibility

• Compatible with platforms supporting DDR4-3200 ECC Unbuffered (UDIMM) memory
• Compatible with AMD Ryzen Pro, Intel Xeon W, and AMD EPYC platforms supporting ECC UDIMM
• Functionally equivalent to HMAA4GU7AJR8N-XN variant
• Not compatible with RDIMM or LRDIMM systems — verify ECC UDIMM support before ordering
• Verify platform QVL (Qualified Vendor List) before ordering

Frequently Asked Questions

What is the difference between HMAA4GU7AJR8N-XNT0 and HMAA4GU7AJR8N-XN?

Both are SK Hynix 32GB DDR4-3200 ECC UDIMM 2Rx8 AJR die modules with identical specifications. XNT0 is a specific production revision of the XN base part number — they are functionally equivalent.

Is HMAA4GU7AJR8N-XNT0 compatible with AMD Ryzen Pro platforms?

Yes, AMD Ryzen Pro platforms with ECC UDIMM support are compatible. Verify your specific motherboard's ECC UDIMM support before ordering.

Can I mix XNT0 with HMAA4GU7AJR8N-XN?

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

The SK Hynix HMAA4GU7AJR8N-XNT0 32GB DDR4-3200 ECC Unbuffered DIMM delivers reliable ECC memory for workstation and entry-level server platforms. Order today for genuine SK Hynix ECC UDIMM quality.