SK Hynix 16GB DDR4-2666MHz PC4-21300 ECC Registered CL19 288-Pin DIMM 1.2V Single Rank x4 Memory Module — HMA82GR7CJR4N-VK

The SK Hynix HMA82GR7CJR4N-VK is a 16GB DDR4-2666MHz ECC Registered (RDIMM) server memory module operating at 1.2V with CL19 latency. Featuring a 288-pin interface and Single Rank x4 configuration, it delivers enterprise-grade ECC error correction for Intel Xeon Scalable (Skylake/Cascade Lake) and AMD EPYC server platforms requiring DDR4-2666 registered memory. HMA82GR7CJR4N-VK is the base part number of this SK Hynix 16GB DDR4-2666 RDIMM family.

Key Features

• 16GB DDR4-2666MHz ECC Registered DIMM for enterprise servers
• DDR4-2666MHz (PC4-21300) for high-bandwidth server memory performance
• Registered DIMM (RDIMM) for stability in multi-DIMM server configurations
• Single Rank x4 (1Rx4) for optimized memory channel performance
• 1.2V low-voltage operation for energy-efficient server operation
• 288-pin interface — standard DDR4 RDIMM form factor

Product Specifications

• Part Number: HMA82GR7CJR4N-VK
• Manufacturer: SK Hynix
• Model: 16GB DDR4-2666 ECC Registered DIMM
• OEM Status: Genuine SK Hynix OEM
• Capacity: 16GB
• Type: DDR4 ECC Registered DIMM (RDIMM)
• Speed: 2666MHz (PC4-21300)
• CAS Latency: CL19
• Voltage: 1.2V
• Rank / Organization: Single Rank x4 (1Rx4)
• Pins: 288-Pin
• ECC: Yes

Memory Specifications

• Capacity: 16GB
• DIMM Type: Registered ECC (RDIMM)
• DDR Generation: DDR4
• Pin Count: 288-Pin
• Rank: Single Rank (1Rx4)
• Voltage: 1.2V
• ECC: Yes (Error-Correcting Code)
• Register Buffer: Yes

Performance Specifications

• Speed: DDR4-2666MHz
• Bandwidth: PC4-21300
• CAS Latency: CL19
• XMP / JEDEC: JEDEC standard

Use Cases

• Enterprise server memory for Intel Xeon Scalable (Skylake/Cascade Lake) platforms
• AMD EPYC server memory requiring DDR4-2666 RDIMM
• Virtualization hosts requiring DDR4-2666 RDIMM memory
• Database and transactional workload server memory

Compatibility

• Compatible with servers supporting DDR4-2666 ECC Registered (RDIMM) memory
• Compatible with Intel Xeon Scalable (Skylake, Cascade Lake) and AMD EPYC platforms
• Functionally equivalent to HMA82GR7CJR4N-VKTF and HMA82GR7CJR4N-VKTN variants
• Verify server QVL (Qualified Vendor List) before ordering

Frequently Asked Questions

What is the difference between HMA82GR7CJR4N-VK, VKTF, and VKTN?

All three are SK Hynix 16GB DDR4-2666 ECC RDIMM 1Rx4 modules with identical specifications. VK is the base part number while VKTF and VKTN are specific production revision suffixes — they are functionally equivalent.

Is the HMA82GR7CJR4N-VK compatible with Intel Xeon Scalable processors?

Yes, it is compatible with Intel Xeon Scalable Skylake and Cascade Lake server platforms supporting DDR4-2666 ECC RDIMM. Verify your specific server”s QVL before ordering.

What does Single Rank x4 (1Rx4) mean?

Single Rank x4 means the module has one rank of memory chips using x4-wide chips, providing efficient memory channel utilization with lower rank count for optimal per-channel performance.

The SK Hynix HMA82GR7CJR4N-VK 16GB DDR4-2666 ECC Registered DIMM delivers reliable, enterprise-grade server memory performance. Order today for genuine SK Hynix RDIMM quality with proven ECC reliability.