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Green 288-pin DDR4 UDIMM module with black memory chips

A-Tech

A-Tech 4GB DDR4 2133 ECC UDIMM 1Rx8 server RAM

SKU CH-AN81-YRDCC

4GB DDR4 2133 ECC unbuffered DIMM with CL15 latency and 1.2V operation for server upgrades

  • Total capacity4 GB
  • Rated speedDDR4 2133 (PC4 17000)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL15
  • Rated voltage1.2 V
  • Buffer typeUnbuffered
  • ECC protection prevents data corruption in servers
  • 1Rx8 single-rank layout ensures broad compatibility
  • DDR4 2133 speed at CL15 latency delivers responsive performance
  • 2V standard voltage keeps power draw low
  • 288-pin UDIMM form factor fits standard server slots

4GB DDR4 2133 ECC UDIMM

This 4GB DDR4 2133 ECC UDIMM module adds error-correcting memory to compatible servers and workstations. It targets administrators who need reliable capacity for entry-level workloads. The unbuffered design suits platforms that accept standard UDIMM slots.

ECC unbuffered with 1Rx8 organisation

The single-rank 1Rx8 layout operates at CL15 latency and 1.20V, matching the DDR4 2133 PC4-17000 specification. ECC parity protects data integrity in always-on environments. This combination of speed, voltage and error correction is the decisive factor for qualification.

288-pin DIMM for DDR4 platforms

The module installs in any 288-pin DDR4 UDIMM socket that supports ECC unbuffered memory. It frees a slot for future expansion while delivering immediate capacity. Verify the system's qualified-vendor list before installation to confirm support for this speed and rank configuration.

How it compares

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

Price $30.99
Cheaper than about 90% of the 6,523 comparable items (median $188.99).
Total capacity 4 GB
Lower than about 95% of the 6,064 comparable items (median 32 GB).
Price per GB $7.75 per GB
Pricier than about 54% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameA-Tech
Total capacity4 GB
Performance
Rated speedDDR4 2133 (PC4 17000)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL15
ECC supportYes
Buffer typeUnbuffered
Memory rank1Rx8
Power
Rated voltage1.2 V

Questions about this item

Will the 2133 MHz rating run at that speed in my server, or does the platform decide the actual frequency?

The module is rated for DDR4 2133 (PC4-17000), but the system memory controller determines the final operating speed; it will run at the highest speed both the CPU and motherboard support, up to 2133 MHz.

What does ECC UDIMM mean for compatibility, and does the unbuffered design limit capacity?

ECC UDIMM indicates error-correcting code on an unbuffered DIMM; it fits standard DDR4 UDIMM slots that accept ECC, but it will not work in registered-only or load-reduced DIMM sockets.

Does the 288-pin DDR4 DIMM fit every server board, or are there clearance issues with large coolers?

The stick uses the standard 288-pin DDR4 DIMM form factor; physical fit depends on slot spacing and CPU cooler overhang, so verify your board layout before installing.

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