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Green rectangular DDR4 memory module with black chips and gold edge connectors

SK hynix

SK hynix HMA82GR7JJR8N-WM 16GB DDR4-2933 ECC Reg Dual Rank server RAM

SKU CH-STFN-BQVH4

16 GB DDR4-2933 ECC registered dual-rank server memory module with CL21 latency

  • Total capacity16 GB
  • Rated speedDDR4 2933 (PC4 23400)
  • CAS latencyCL21
  • Buffer typeRegistered
  • Memory rank2Rx8
  • Product type288-Pin DDR4 SDRAM
  • ECC protection prevents data corruption with registered dual-rank design
  • 16 GB capacity handles large server workloads in a single module
  • DDR4-2933 speed delivers 23400 MB/s peak bandwidth for fast throughput
  • CL21 latency keeps response times tight under heavy load
  • 288-pin DDR4 form factor fits standard registered DIMM slots

16 GB DDR4-2933 ECC Registered DIMM

This 16 GB DDR4-2933 module is built for servers and workstations that require error-correcting registered memory. The dual-rank 2Rx8 organisation and CL21 latency suit multi-socket platforms where data integrity matters more than low latency. It plugs into standard 288-pin DDR4 slots and runs at the PC4-23400 data rate.

Sustained throughput with registered buffering

The on-DIMM register reduces electrical load on the memory controller, allowing larger populations of modules to run at the rated 2933 MT/s without signal degradation. ECC circuitry corrects single-bit errors on the fly, preventing silent data corruption during long compute jobs or virtualization workloads. Dual-rank density keeps the memory controller busy across both ranks for steady bandwidth.

Registered ECC requirement decides fit

This part only works in systems that explicitly support registered ECC DDR4; consumer desktop boards and most unbuffered workstation platforms will not post with it installed. Verify the motherboard or server manual lists registered ECC DDR4-2933 before purchase.

How it compares

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

Price $81.99
Cheaper than about 75% 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 $5.12 per GB
Cheaper than about 72% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameHynix
Part numberHMA82GR7JJR8N-WM
Total capacity16 GB
Product type288-Pin DDR4 SDRAM
Performance
Rated speedDDR4 2933 (PC4 23400)
Memory
CAS latencyCL21
ECC supportYes
Buffer typeRegistered
Memory rank2Rx8

Questions about this item

How much heat and power does this 16GB DDR4-2933 registered ECC module generate during continuous server operation?

The module uses standard DDR4 voltage and registered buffering to reduce electrical load on the memory controller. Dual-rank organisation and CL21 timing keep power draw consistent with other PC4-23400 parts. Adequate chassis airflow is recommended for sustained workloads.

What motherboard features are required to use this 288-pin registered ECC memory?

The board must provide 288-pin DDR4 DIMM slots, support registered (buffered) modules, and enable ECC in the BIOS. Consumer desktop chipsets typically lack these features, so a server or workstation platform is needed.

Can this PC4-23400 dual-rank stick be mixed with other DDR4 speeds in a multi-channel server?

The module runs at DDR4-2933 with CL21 latency. When mixed with slower DDR4, the system will downclock all channels to the lowest common speed and loosest timings. Population rules for registered dual-rank DIMMs still apply.

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