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
A single green 240-pin DDR3 DIMM module with black chips and a silver label

A-Tech

A-Tech 16GB DDR3 1066 PC3-8500 ECC RDIMM 4Rx4 Server Memory

SKU CH-MAFZ-1Q22X

16 GB DDR3 1066 ECC registered server memory module for IBM-Lenovo systems

  • Total capacity16 GB
  • Rated speedDDR3 1066 (PC3 8500)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL7
  • Rated voltage1.5 V
  • Buffer typeRegistered
  • 16 GB DDR3 1066 MHz boosts server responsiveness
  • ECC RDIMM with 4Rx4 rank detects and corrects data errors
  • 50 V standard voltage keeps power draw predictable
  • 240-pin DIMM fits DDR3 registered memory slots
  • Tested replacement for IBM-Lenovo part numbers 43X5071, 4528, 46C7477, 46C7483, 46C7489, 47J0139, 49Y1536

Server memory upgrade for legacy platforms

This 16GB DDR3 1066 module uses a 240-pin RDIMM form factor with registered ECC and a 4Rx4 organisation. It operates at the standard 1.5V voltage with CL7 latency. The part is built as a direct replacement for several IBM-Lenovo server part numbers.

Fits registered DDR3 slots only

The module requires a motherboard that supports registered ECC DDR3 DIMMs and cannot be used in unbuffered desktop slots. Each stick occupies a single 240-pin socket and presents four ranks to the memory controller. Builders must confirm their platform accepts 4Rx4 registered modules before installation.

Steady throughput under constant load

Registered buffering and ECC correction maintain data integrity during extended server workloads. The CL7 timing at 1066MHz delivers consistent bandwidth for multi-threaded applications that run for hours. Modules are tested to sustain operation without the errors that can accumulate in non-ECC memory under similar pressure.

How it compares

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

Price $27.99
Cheaper than about 91% 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 $1.75 per GB
Cheaper than about 94% of the 6,064 comparable items (median $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 nameA-Tech
Total capacity16 GB
Performance
Rated speedDDR3 1066 (PC3 8500)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL7
ECC supportYes
Buffer typeRegistered
Memory rank4Rx4
Power
Rated voltage1.5 V

Questions about this item

How does the 4Rx4 rank configuration affect sustained memory throughput on this DDR3 1066 module?

The 4Rx4 organisation places four ranks on a single DIMM, so the memory controller must interleave more rank-to-rank switches during long workloads, which can become the first throughput limit under sustained use.

What thermal or acoustic impact should I expect when this 1.5 V registered ECC DIMM runs continuously in a server chassis?

Registered DDR3 modules at 1.5 V draw modest power and have no active cooling; in a properly ventilated server they add negligible heat and produce no audible noise of their own.

Which existing system component must already support 240-pin DDR3 registered ECC memory for this 16 GB module to function?

The motherboard and CPU memory controller must both accept 240-pin DDR3 RDIMMs with ECC; without that support the module will not be recognised or will fail to boot.

More in ECC Server RAM

Similar items