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Manufacturer: SK Hynix Last updated: September 11, 2026
SK Hynix HMA84GR7CJR4N-XN (32GB DDR4-3200 ECC RDIMM/CL22/2Rx4/1.2V/288-Pin/Registered) Review
The SK Hynix HMA84GR7CJR4N-XN uses x4 chip organization rather than the more common x8 layout, a configuration enterprise buyers often prefer for higher memory-channel density and improved reliability characteristics in large server deployments.
Registered ECC memory in a 2Rx4 (dual-rank, x4) configuration, a chip organization that enterprise buyers frequently favor for its reliability characteristics under Chipkill-style advanced error correction schemes supported by many server platforms. For AMD EPYC and Intel Xeon Scalable servers with explicit RDIMM support, particularly platforms that support advanced x4-based error correction schemes. RDIMMs cannot be mixed with UDIMMs in the same system. Against the Kingston Server Premier KSM32RD8/32MFR, covered elsewhere on this site, that module uses x8 organization rather than this SK Hynix module's x4 layout, a difference that matters specifically for platforms supporting advanced Chipkill-style correction. Against the Samsung M393A4K40DB3-CWE, also covered elsewhere on this site, that module also uses x4 organization at the same capacity and speed.
ECC and Registered Operation
Registered ECC memory in a 2Rx4 (dual-rank, x4) configuration, a chip organization that enterprise buyers frequently favor for its reliability characteristics under Chipkill-style advanced error correction schemes supported by many server platforms.
Compatibility
For AMD EPYC and Intel Xeon Scalable servers with explicit RDIMM support, particularly platforms that support advanced x4-based error correction schemes. RDIMMs cannot be mixed with UDIMMs in the same system.
Comparison to Sibling Products
Against the Kingston Server Premier KSM32RD8/32MFR, covered elsewhere on this site, that module uses x8 organization rather than this SK Hynix module's x4 layout, a difference that matters specifically for platforms supporting advanced Chipkill-style correction. Against the Samsung M393A4K40DB3-CWE, also covered elsewhere on this site, that module also uses x4 organization at the same capacity and speed.
Specifications
Identity
| Brand | SK hynix |
|---|---|
| Series | SK Hynix Server |
Memory
| DDR Generation | DDR4 |
|---|---|
| Capacity | 32 GB |
| Speed | 3200 MT/s |
| CAS Latency | 22 |
| Voltage | 1.2 V |
Module and platform
| RAM Segment | Server |
|---|---|
| Pin Count | 288 |
Capacity
| Capacity Per Module | 32 GB |
|---|---|
| Module Count | 1 |
Speed and timings
| True Latency | 13.8 ns |
|---|
Silicon
| ECC | Yes |
|---|
Commercial
| Warranty | Limited Lifetime |
|---|
| Model Number | HMA84GR7CJR4N-XN |
|---|---|
| Rank Configuration | 2Rx4 (Dual Rank, x4) |
| Registered | Yes (RDIMM) |
| Platform Compatibility | AMD EPYC, Intel Xeon Scalable |
| Spec Score | 2.4 |
Expert Review
Reviewed by Burooj Alam. Rated by us, not by users.
Best for
- Enterprise server buyers whose platform specifically benefits from x4-organized RDIMMs for advanced error correction. This module's chip layout matters for that specific reliability feature.
Not for
- Not for buyers with no specific requirement for x4 organization. The x8-organized Kingston KSM32RD8/32MFR, covered elsewhere on this site, is a simpler, equally valid alternative for most deployments.
FAQs
What are the key specifications of the SK Hynix HMA84GR7CJR4N-XN (32GB DDR4-3200 ECC RDIMM/CL22/2Rx4/1.2V/288-Pin/Registered)?
The SK Hynix HMA84GR7CJR4N-XN (32GB DDR4-3200 ECC RDIMM/CL22/2Rx4/1.2V/288-Pin/Registered) is a memory kit from SK Hynix. Key specs: DDR Generation DDR4, Capacity 32GB, Kit Configuration 1 x 32GB, Pin Count 288, Speed 3200MHz.
Will the SK Hynix HMA84GR7CJR4N-XN (32GB DDR4-3200 ECC RDIMM/CL22/2Rx4/1.2V/288-Pin/Registered) work with my current setup?
The SK Hynix HMA84GR7CJR4N-XN (32GB DDR4-3200 ECC RDIMM/CL22/2Rx4/1.2V/288-Pin/Registered) lists DDR Generation is DDR4. Check that against the hardware you already own before buying, since this is the field that most often decides whether a part fits. Our upgrade checker at /upgrade can confirm compatibility for common combinations.
Who is the SK Hynix HMA84GR7CJR4N-XN (32GB DDR4-3200 ECC RDIMM/CL22/2Rx4/1.2V/288-Pin/Registered) best suited to?
It suits enterprise server buyers whose platform specifically benefits from x4-organized rdimms for advanced error correction. this module's chip layout matters for that specific reliability feature..
What are the drawbacks of the SK Hynix HMA84GR7CJR4N-XN (32GB DDR4-3200 ECC RDIMM/CL22/2Rx4/1.2V/288-Pin/Registered)?
It is a poor fit for not for buyers with no specific requirement for x4 organization. the x8-organized kingston ksm32rd8/32mfr, covered elsewhere on this site, is a simpler, equally valid alternative for most deployments..
Compare and read more
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