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Green bare circuit board with black memory chips, gold edge connector, no heat spreader

A-Tech

A-Tech 16GB DDR5 6400MHz ECC RDIMM 1Rx8 Server RAM

SKU CH-XFKJ-MBVPB

16 GB DDR5 6400 MHz ECC registered server memory module with 1Rx8 organisation

  • Total capacity16 GB
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetSamsung Chipset
  • CAS latency32
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • 16GB DDR5 6400MHz ECC RDIMM boosts server throughput
  • 1V operation cuts power draw per module
  • Registered 1Rx8 design supports dense memory configs
  • Samsung DRAM ICs deliver tested reliability
  • 288-pin RDIMM fits standard DDR5 server slots

Server ECC RDIMM upgrade

This 16GB DDR5 module is a registered ECC RDIMM built for server and workstation platforms that require error-correcting memory. It serves administrators and integrators who need dependable capacity for virtualization, databases or compute clusters.

Standard voltage and no spreader

Operating at 1.10V DDR5 standard voltage, the module draws nominal power without a heat spreader. The registered buffer reduces electrical load on the memory controller, helping maintain stable thermals and quiet operation in densely populated chassis.

1Rx8 rank layout

The single-rank 1Rx8 organization with Samsung chipset determines compatibility with motherboards qualified for this rank configuration. Systems that require dual-rank or x4 modules will not accept this part.

How it compares

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

Price $531.99
Pricier than about 71% 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).
CAS latency 32
Lower than about 74% of the 439 comparable items (median 40).
Price per GB $33.25 per GB
Pricier than about 90% of the 6,064 comparable items (median $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 nameA-Tech
Product lineCompatible Replacement for Samsung M321R2GA3PB1-CCP M321R2GA3EB2-CCP
Model nameA-Tech 16 GB DDR5-6400 ECC RDIMM Server RAM Module
Total capacity16 GB
Product type288-Pin DDR5 RDIMM
Performance
Rated speedDDR5 6400 (PC5 51200)
Processor
ChipsetSamsung Chipset
Memory
CAS latency32
ECC supportYes
Buffer typeRegistered
Memory rank1Rx8
Heat spreaderNo
Power
Rated voltage1.1 V

Questions about this item

How do I install this 288-pin DDR5 RDIMM and what step do people miss?

Align the notch on the module with the slot key, press straight down until both retention clips click, and verify the motherboard requires registered ECC DIMMs — many boards only accept unbuffered memory.

What maintenance or replacement will this 1Rx8 module need later?

No routine maintenance is required; if a memory test ever reports uncorrectable errors, replace the module.

What limit appears first under sustained load with this 1.10V DDR5 6400 ECC RDIMM?

The registered buffer adds one cycle of latency, so sustained throughput is bounded by the CAS 32 timing at 6400 MT/s.

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