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Green 288-pin DDR4 UDIMM with black chips and gold contacts

SK hynix

SK hynix HMA82GU7CJR8N-VK 16GB DDR4-2666 ECC UDIMM 2Rx8 CL11 1.2V

SKU CH-BJD5-DZCXG

16 GB DDR4-2666 ECC UDIMM module with CL11 latency and 1.2 V operation

  • Total capacity16 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • CAS latencyCL11
  • Rated voltage1.2 V
  • Buffer typeUnbuffered
  • Memory rank2Rx8
  • 16 GB DDR4 capacity supports demanding server workloads
  • 2666 MT/s speed with CL11 latency delivers responsive data access
  • ECC protection detects and corrects single-bit errors automatically
  • Dual-rank 2Rx8 organisation maximises memory density per slot
  • 2 V operation reduces power draw and heat output

16GB DDR4-2666 ECC UDIMM for servers

This module delivers 16GB of DDR4 memory at 2666 MT/s with ECC error correction. It uses an unbuffered 288-pin DIMM form factor and operates at 1.2V. The dual-rank 2Rx8 organisation and CL11 latency suit mainstream server workloads. Supermicro certification confirms validated compatibility.

Suits servers needing ECC protection on unbuffered

Builders who require registered or load-reduced DIMMs cannot use this unbuffered module. Systems limited to lower DDR4 speeds will not reach the rated 2666 MT/s. Buyers needing higher capacity per slot or lower latency figures should evaluate other modules.

Fits 288-pin DDR4 slots with ECC support in the BIOS

The 1.2V voltage matches standard DDR4 power rails without extra cooling. Dual-rank density leaves additional slots free for future expansion. Verify motherboard qualification lists for full-speed operation and ECC enablement.

How it compares

Measured against everything we stock in ECC Server RAM, at today’s prices. Recalculated every night.

Price $130.99
Cheaper than about 59% of the 6,523 comparable items (median $188.99).
Total capacity 16 GB
Lower than about 60% of the 6,064 comparable items (median 32 GB).
Price per GB $8.19 per GB
Pricier than about 58% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameSK hynix
Model nameHMA82GU7CJR8N-VK
Total capacity16 GB
Product type288-Pin DDR4 SDRAM
Performance
Rated speedDDR4 2666 (PC4 21300)
Memory
CAS latencyCL11
ECC supportYes
Buffer typeUnbuffered
Memory rank2Rx8
Power
Rated voltage1.2 V

Questions about this item

What motherboard slot is required for the 288-pin DDR4 UDIMM?

The module fits a standard 288-pin DDR4 UDIMM slot on a motherboard that supports DDR4 2666 ECC unbuffered memory.

Will the CL11 timing work with existing DDR4 2666 CL19 modules?

The system will run all modules at the slowest common timing, so CL11 sticks will operate at CL19 alongside CL19 modules.

How can I verify the 16GB dual-rank ECC module is recognised?

Check the BIOS memory summary or OS tool — it should show 16GB, 2666 MT/s, ECC enabled and dual-rank (2Rx8) configuration.

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