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

Axiom

Axiom AA940922-AX 16GB DDR4 2666 ECC Registered memory upgrade

SKU CH-TN48-3S2CR MPN AA940922-AX

16 GB DDR4 ECC registered module at 2666 MHz with CL19 latency for Dell systems

  • Total capacity16 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • CAS latencyCL19
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • Product type288-Pin DDR4 SDRAM
  • 16GB capacity expands server memory for demanding workloads
  • DDR4 2666 speed delivers PC4 21300 bandwidth for data-intensive tasks
  • ECC Registered design detects and corrects errors for system stability
  • CL19 CAS latency provides responsive access at 1.20V operation
  • 288-pin DDR4 module built for compatible Dell systems

Dell System Upgrade

The Axiom AA940922-AX is a 16GB DDR4 2666 registered ECC module built for Dell systems that require PC4 21300 memory. It targets administrators expanding server or workstation capacity with error-correcting, registered DIMMs.

288-Pin Registered Design

The 288-pin DDR4 form factor fits Dell platforms that accept registered ECC memory at 1.20V. The registered buffer reduces electrical load on the memory controller, freeing headroom for larger populations per channel.

CL19 Sustained Operation

CAS latency CL19 and DDR4 2666 timing deliver predictable throughput during extended workloads. ECC correction maintains data integrity across long compute runs without the variability seen in unbuffered consumer modules.

How it compares

Measured against everything we stock in Model-Specific Memory Upgrades, at today’s prices. Recalculated every night.

Price $378.99
Typical for this category: the median of 21,161 items is $397.99.
Total capacity 16 GB
Lower than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $23.69 per GB
Pricier than about 68% of the 20,941 comparable items (median $8.19 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 nameAxiom
Model nameAA940922-AX
Total capacity16 GB
Product type288-Pin DDR4 SDRAM
Performance
Rated speedDDR4 2666 (PC4 21300)
Memory
CAS latencyCL19
ECC supportYes
Buffer typeRegistered
Power
Rated voltage1.2 V
Compatibility
Compatible systemsDell

Questions about this item

What is the CAS latency limit that affects sustained throughput on this CL19 DDR4 2666 module?

The module runs at CL19, so each access cycle waits 19 clock ticks before data moves, which is the primary latency limit during sustained workloads.

How much heat and power does the 1.20 V registered ECC DIMM produce when running all day?

At 1.20 V the DDR4 2666 registered ECC DIMM draws low power and generates modest heat, typical for server memory operating continuously.

Which Dell systems already have 288-pin DDR4 slots that accept this registered ECC upgrade?

This 288-pin DDR4 2666 registered ECC module is built for compatible Dell platforms that support registered memory; verify your model's memory list before installing.

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