We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Green circuit board with black memory chips and gold contacts

A-Tech

A-Tech 4GB DDR3 1600 ECC UDIMM 1Rx8 Server Memory

SKU CH-ATAF-SW4HG

4GB DDR3 1600 ECC unbuffered UDIMM with CL11 latency for server upgrades

  • Capacity4GB
  • SpeedDDR3 1600 (PC3 12800)
  • CAS LatencyCL11
  • Voltage1.50V
  • ECCYes
  • Buffered/RegisteredUnbuffered
  • ECC protection safeguards data integrity with built-in error correction
  • DDR3 1600 speed delivers responsive server performance at PC3-12800 bandwidth
  • Single-rank 1Rx8 organisation optimises memory controller efficiency
  • Standard 1.50V operation matches DDR3 platform requirements
  • 240-pin UDIMM form factor fits compatible server and workstation slots

Compatible Replacement for Hynix HMT451E7BFR8C-PB

This A-Tech module is a 4GB DDR3 1600 ECC unbuffered DIMM built to replace the Hynix HMT451E7BFR8C-PB. It runs at PC3-12800 speed with CL11 latency at 1.50V and uses a 1Rx8 single-rank layout. The 240-pin form factor fits standard DDR3 server and workstation slots. Quality assurance testing and a lifetime warranty back the part.

Suits servers needing ECC UDIMM DDR3 1600

System builders maintaining DDR3 platforms that require error-correcting unbuffered memory at 1600 MHz will find this a direct fit. Buyers whose boards demand registered DIMMs, a different voltage, or higher density per slot cannot use this module. Compatibility must be verified against the system's qualified-vendor list before purchase.

Deciding spec: ECC unbuffered DDR3 1600 at 1.50V

The single specification that determines fit is the combination of ECC unbuffered operation, DDR3 1600 speed, and 1.50V voltage in a 240-pin DIMM. If the motherboard calls for registered ECC, a different voltage, or a non-ECC UDIMM, this module will not work. Match all three parameters to the system documentation.

Highlights

  • ECC protection safeguards data integrity with built-in error correction
  • DDR3 1600 speed delivers responsive server performance at PC3-12800 bandwidth
  • Single-rank 1Rx8 organisation optimises memory controller efficiency
  • Standard 1.50V operation matches DDR3 platform requirements
  • 240-pin UDIMM form factor fits compatible server and workstation slots

Specifications

BrandA-Tech
SeriesCompatible Replacement for Hynix
ModelHMT451E7BFR8C-PB
Capacity4GB
SpeedDDR3 1600 (PC3 12800)
CAS LatencyCL11
Voltage1.50V
ECCYes
Buffered/RegisteredUnbuffered
Rank1Rx8
ChipsetMajor Brand Chipset
FeaturesHMT451E7BFR8C-PB

Questions about this item

How do I install this 240-pin DDR3 DIMM and what is the common mistake?

Align the notch on the module with the key in the slot, press down firmly until both side clips click shut; the common mistake is stopping when it feels seated but before the clips engage.

What maintenance or replacement will this 4GB ECC UDIMM need later?

No scheduled maintenance is required; replace the module only if memory diagnostics report correctable errors that become uncorrectable or if a system upgrade demands higher capacity.

What limit appears first on this CL11 1.5V module under sustained load?

The 1600 MT/s data rate and CL11 latency set the throughput ceiling; sustained workloads will saturate bandwidth before the 1.5V thermal envelope becomes a constraint.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.