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Green 240-pin DDR3 DIMM with black chips, 16GB registered ECC module

Axiom

Axiom AX31333R9A/16L 16GB DDR3 1333 ECC Registered Server RAM

SKU CH-EX3A-59NFD MPN AX31333R9A/16L

16 GB DDR3 server memory with ECC and registered signal processing, running at 1333 MHz and 1.35 V in a 240-pin DIMM

  • Total capacity16 GB
  • Rated speedDDR3 1333 (PC3 10600)
  • Rated voltage1.35 V
  • Buffer typeRegistered
  • Product type240-Pin DDR3 SDRAM
  • 16GB capacity supports demanding server workloads
  • ECC registered design detects and corrects memory errors
  • DDR3 1333 (PC3 10600) speed delivers reliable throughput
  • Low 1.35V voltage reduces power draw and heat
  • 240-pin DIMM form factor fits standard server slots

16 GB DDR3 Registered ECC Module

This 16 GB DDR3 registered DIMM carries ECC error correction for server platforms that require registered memory. It operates at 1333 MHz with a 1.35 V supply and uses the 240-pin form factor. The module is suited for capacity upgrades in compatible multi-socket systems.

DDR3 1333 Registered Signal Constraints

Registered buffering adds one clock cycle of latency compared with unbuffered modules and requires a motherboard designed for registered memory. The 1333 MHz speed ceiling limits bandwidth to the PC3 10600 rating. Mixed populations of registered and unbuffered DIMMs are not supported.

Replaces Lower-Capacity DDR3 Registered DIMMs

Swapping smaller registered modules for this 16 GB part increases total memory without adding slots. The jump is worthwhile when the platform supports the density and the workload benefits from additional ECC-protected capacity. Systems limited to unbuffered memory cannot use this module.

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 nameAxiom
Model nameAX31333R9A/16L
Total capacity16 GB
Product type240-Pin DDR3 SDRAM
Performance
Rated speedDDR3 1333 (PC3 10600)
Memory
ECC supportYes
Buffer typeRegistered
Power
Rated voltage1.35 V
Size & build
Shipping weight0.09 kg
Package size178 × 76 × 25 mm

Questions about this item

Is the 16 GB capacity the right choice for my server upgrade?

This module provides 16 GB in a single 240-pin DDR3 DIMM, allowing you to reach higher total memory by populating multiple slots on a compatible server board.

What does the 1333 MHz speed mean for real-world server performance?

The DDR3 1333 (PC3-10600) rating sets the maximum data rate the module can sustain; actual throughput is determined by the server's memory controller and the number of populated channels.

How does the DDR3 registered ECC interface affect compatibility and stability?

The module uses a 240-pin DDR3 interface with registered signalling and ECC, which reduces electrical load on the memory bus and corrects single-bit errors for improved reliability in multi-DIMM server configurations.

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