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 240-pin DDR3 ECC registered DIMM with black chips

A-Tech

A-Tech 4GB DDR3 1866MHz ECC RDIMM 1Rx4 CL13 1.5V 240-Pin Server Memory

SKU CH-QXFQ-32EB3

4GB DDR3 1866MHz ECC registered DIMM with CL13 latency and 1.5V operation for server upgrades

  • Total capacity4 GB
  • Rated speedDDR3 1866 (PC3 14900)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL13
  • Rated voltage1.5 V
  • Buffer typeRegistered
  • 4GB capacity expands server multitasking headroom
  • 1866MHz DDR3 speed accelerates data throughput
  • ECC RDIMM detects and corrects memory errors
  • CL13 latency at 1.5V balances responsiveness with efficiency
  • 240-pin registered DIMM fits compatible server slots

Server Memory Upgrade

This 4GB DDR3 1866MHz ECC RDIMM module is designed for server and workstation systems that require registered memory with error correction. It replaces the Hynix HMT351R7EFR4C-RD part number and fits 240-pin DIMM slots operating at 1.5V standard voltage. The single-rank 1Rx4 organisation uses major-brand chipsets to deliver dependable capacity for compatible platforms.

Sustained Load Behaviour

Registered buffering and ECC circuitry maintain data integrity during continuous workloads such as virtualisation, database tasks or long rendering jobs. The CL13 latency and PC3-14900 bandwidth provide steady throughput without the error accumulation that can affect non-ECC modules under prolonged stress. Testing validates reliable operation across extended duty cycles in qualified systems.

Thermals and Power

Standard 1.5V DDR3 voltage keeps power draw consistent with the DDR3 specification for registered DIMMs. The module operates within normal server thermal envelopes without requiring additional airflow beyond typical chassis cooling. No exotic cooling or elevated voltage is needed, so acoustic profile matches other registered memory in the same chassis.

How it compares

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

Price $28.99
Cheaper than about 91% 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 $7.25 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 nameA-Tech
Product lineCompatible Replacement for Hynix
Model nameHMT351R7EFR4C-RD
Total capacity4 GB
Performance
Rated speedDDR3 1866 (PC3 14900)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL13
ECC supportYes
Buffer typeRegistered
Memory rank1Rx4
Power
Rated voltage1.5 V

Questions about this item

How much heat and power does a 1.5 V DDR3 1866 MHz registered DIMM add when running continuously?

At the standard 1.5 V DDR3 voltage this 4 GB module draws only modest power, so heat output stays low enough for normal server airflow even under all-day workloads.

What motherboard slot and memory controller features are required to use this 240-pin ECC RDIMM?

You need a DDR3 DIMM socket that accepts 240-pin registered modules and a memory controller that supports ECC and registered operation.

Can this DDR3 1866 MHz CL13 1Rx4 module share a channel with older DDR3 DIMMs of different speed or rank?

Yes, the memory controller will down-clock all modules to the slowest speed and highest latency present, so mixing is possible but overall bandwidth drops to the lowest common spec.

More in ECC Server RAM

Similar items