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Green 288-pin DDR4 DIMM with black chips and silver heatspreader

A-Tech

A-Tech 16GB DDR4 2933MHz ECC RDIMM 1Rx4 Server RAM Samsung M393A2K40CB2-CVF M393A2K40DB2-CVF

SKU CH-0BZ3-JBQR8

A 16 GB DDR4 2933 MHz ECC registered DIMM with CL21 latency and 1.2 V operation for server and workstation upgrades

  • Total capacity16 GB
  • Rated speedDDR4 2933 (PC4 23400)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL21
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • 16GB DDR4 2933MHz ECC RDIMM boosts server responsiveness
  • CL21 latency at 1.20V delivers stable registered performance
  • 1Rx4 Samsung-compatible chips ensure reliable data integrity
  • 288-pin DDR4 form factor fits standard server DIMM slots
  • Lifetime warranty with US-based tech support backs every module

16 GB DDR4 ECC RDIMM for servers

This 16 GB DDR4 2933 MHz module is a registered DIMM with ECC and a 1Rx4 rank layout. It runs at the standard 1.2 V and carries a CL21 latency rating. The part replaces Samsung M393A2K40CB2-CVF and M393A2K40DB2-CVF modules in compatible server and workstation platforms.

Thermals and power in normal use

Operating at 1.2 V keeps power draw low for a 16 GB registered module. The DDR4 standard voltage and registered buffer help maintain signal integrity without adding active cooling requirements. Typical server airflow is sufficient to manage heat under normal workloads.

Build quality and daily handling

Major-brand chips are used on a 288-pin DDR4 DIMM PCB. The registered design adds a buffer between the memory controller and the DRAM, which improves stability in multi-module configurations. Verify your system's qualified-vendor list before installation to ensure the 1Rx4 organisation is supported.

How it compares

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

Price $108.99
Cheaper than about 66% 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 $6.81 per GB
Cheaper than about 55% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameA-Tech
Total capacity16 GB
Performance
Rated speedDDR4 2933 (PC4 23400)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL21
ECC supportYes
Buffer typeRegistered
Memory rank1Rx4
Power
Rated voltage1.2 V

Questions about this item

How do I install this 288-pin DDR4 RDIMM and what step is often missed?

Power down the server, open the chassis, align the notch on the 288-pin DDR4 RDIMM with the slot key, press firmly until both ejector clips click, then verify in BIOS that the module runs at 2933 MHz with ECC active.

What maintenance or replacement will this 16 GB ECC RDIMM need over time?

No scheduled maintenance is required; if a correctable error count rises or the module fails POST, replace the single 16 GB stick — each unit is tested individually and carries a lifetime warranty.

What limit appears first when this CL21 1.20 V module runs under sustained load?

The CAS latency of CL21 at 2933 MHz sets the timing ceiling; thermal throttling is unlikely at standard 1.20 V, so latency remains the primary constraint during continuous workloads.

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