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Green 240-pin DDR3 UDIMM module with black chips

A-Tech

A-Tech 4GB DDR3 1600 ECC UDIMM 1Rx8 for Hynix HMT451U7AFR8C-PB HMT451U7BFR8C-PB HMT451U7DFR8C-PB Server Memory

SKU CH-WN4A-8CF4X
  • Total capacity4 GB
  • Rated speedDDR3 1600 (PC3 12800)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL11
  • Rated voltage1.5 V
  • Buffer typeUnbuffered
  • 4GB capacity expands server memory headroom for heavier workloads
  • DDR3 1600 speed with CL11 latency accelerates data throughput
  • ECC unbuffered design detects and corrects single-bit errors automatically
  • 50V standard voltage ensures broad platform compatibility
  • 240-pin UDIMM form factor fits existing DDR3 server slots

Target system

This A-Tech module delivers 4GB of DDR3 ECC unbuffered memory at 1600MHz with CL11 timing. It is built for servers and workstations that require error-correcting code on standard 240-pin DIMM slots. The 1Rx8 organisation suits single-rank population rules.

Compatibility check

Confirm the platform accepts DDR3 ECC UDIMM modules at 1.5V and supports 1600MHz operation. Verify the motherboard or system manual lists 240-pin unbuffered ECC DIMMs and the maximum capacity per slot. Match the Hynix part numbers HMT451U7AFR8C-PB, HMT451U7BFR8C-PB or HMT451U7DFR8C-PB for direct replacement.

Sustained operation

Major-brand chips and 1.5V standard voltage keep power draw stable during continuous workloads. ECC circuitry detects and corrects single-bit errors without halting the system. Quality-assurance testing validates reliability for always-on server and workstation deployments.

How it compares

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

Price $21.99
Cheaper than about 94% 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 $5.50 per GB
Cheaper than about 69% 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 speedDDR3 1600 (PC3 12800)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL11
ECC supportYes
Buffer typeUnbuffered
Memory rank1Rx8
Power
Rated voltage1.5 V

Questions about this item

What comes in the box and do I need to buy anything else to install this module?

The package contains one 4 GB DDR3 1600 ECC UDIMM with 240 pins; no cables, brackets or additional components are required for installation.

How do I choose between the listed Hynix part numbers HMT451U7AFR8C-PB, HMT451U7BFR8C-PB and HMT451U7DFR8C-PB?

All three Hynix part numbers share the same 4 GB DDR3 1600 ECC UDIMM 1Rx8 specification, so this single A-Tech module replaces any of them.

What does the PC3-12800 rating mean for actual server performance?

PC3-12800 indicates DDR3 1600 operation at CL11 and 1.50 V, giving standard DDR3 bandwidth and error-correcting capability for compatible server or workstation boards.

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