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Green circuit board with black memory chips and gold edge connectors

SK hynix

SK hynix HMA82GR7AFR8N-VK 16GB DDR4-2666 CL19 Registered ECC Server RAM

SKU CH-J749-S57N5 MPN HMA82GR7AFR8N-VK

16 GB DDR4-2666 registered ECC server memory with CL19 latency and 1.20 V operation

  • Total capacity16 GB
  • Rated speedDDR4 2666 (PC4 21330)
  • CAS latencyCL19
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • Product type288-Pin DDR4 SDRAM
  • Registered ECC design boosts server reliability
  • 16 GB capacity supports heavy workloads
  • DDR4 2666 speed enables fast data throughput
  • CL19 latency at 1.20 V balances performance and efficiency
  • 288-pin DIMM fits standard server slots

16 GB Registered DDR4 Server Module

This 16 GB DDR4-2666 module uses a registered design with CL19 latency and runs at 1.20 V. It fits 288-pin DIMM slots and is built for server platforms that require registered memory.

Compatibility Checks Before Ordering

Confirm the motherboard supports registered DDR4 DIMMs and operates at DDR4-2666 or lower speeds. Verify the board accepts 1.20 V modules and has free 288-pin slots. Systems that only accept unbuffered memory will not work with this stick.

Upgrade Path From Unbuffered Or Lower-Capacity Kits

Replacing unbuffered modules with this registered unit adds signal integrity for larger memory arrays. The jump is worthwhile when expanding beyond the unbuffered limit or when the platform mandates registered DIMMs for stability.

How it compares

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

Price $114.99
Cheaper than about 64% 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 $7.19 per GB
Typical for this category: the median of 6,064 items is $7.25 per GB.

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameHynix
Product lineServer Memory
Model nameHMA82GR7AFR8N-VK
Total capacity16 GB
Product type288-Pin DDR4 SDRAM
Performance
Rated speedDDR4 2666 (PC4 21330)
Memory
CAS latencyCL19
ECC supportNo
Buffer typeRegistered
Power
Rated voltage1.2 V

Questions about this item

Does the HMA82GR7AFR8N-VK module ship as a single 288-pin DIMM or do I need to buy anything else?

The box contains one 16 GB registered DDR4 DIMM; no extra parts are required for installation.

Should I choose the PC4-2666 (DDR4-21300) version or a different speed grade for my server?

Select this PC4-2666 module when your platform specifies DDR4-2666 registered memory; other speed grades will not match that requirement.

What does the CL19 latency mean once the stick is running in a live system?

At DDR4-2666 the module operates at CAS latency 19, delivering the standard timing profile for registered server memory at this speed.

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