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Green 240-pin DDR3 DIMM with black chips and silver label

A-Tech

A-Tech 4GB DDR3 1866MHz ECC RDIMM 1Rx8 Server RAM

SKU CH-EHGG-AXCKY

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

  • Total capacity4 GB
  • Rated speedDDR3 1866 (PC3 14900)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL13
  • Rated voltage1.5 V
  • Buffer typeRegistered
  • ECC protection prevents data corruption in critical server workloads
  • Registered design reduces electrical load for stable multi-module operation
  • DDR3 1866MHz speed delivers PC3-14900 bandwidth for responsive performance
  • 1Rx8 single-rank layout simplifies memory controller scheduling
  • 5V standard voltage ensures broad DDR3 platform compatibility

4GB DDR3 1866MHz ECC RDIMM for servers

This 4GB registered DIMM runs at DDR3 1866MHz (PC3-14900) with CL13 latency and 1.50V operation. It uses a 1Rx8 organisation and major-brand chips on a 240-pin form factor. The module is built for server and workstation platforms that require ECC error correction and registered signalling.

Suits admins replacing Hynix HMT451R7AFR8C-RD

It fits systems that accept DDR3 1866MHz ECC RDIMM memory in single 4GB increments. Buyers needing higher capacities per slot, unbuffered ECC UDIMM modules, or non-ECC memory for desktop boards should look at something else.

Registered ECC RDIMM with 1Rx8 organisation

The registered buffer and ECC circuitry are mandatory for compatible server chipsets; a standard UDIMM will not function in these slots. Verify that your platform supports DDR3 1866MHz registered ECC before ordering.

How it compares

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

Price $22.99
Cheaper than about 93% 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 $5.75 per GB
Cheaper than about 66% 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 capacity4 GB
Performance
Rated speedDDR3 1866 (PC3 14900)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL13
ECC supportYes
Buffer typeRegistered
Memory rank1Rx8
Power
Rated voltage1.5 V

Questions about this item

How can I confirm the module is running at DDR3 1866MHz with CL13 after installation?

Enter the system BIOS or UEFI and check the memory information screen; it should show 1866 MHz speed and a CAS latency of 13 at 1.50V.

Does the package include any heatsinks, cables or additional modules beyond the single 4GB stick?

The box contains only one 4GB DDR3 240-pin ECC RDIMM module; no heatsinks, cables or extra sticks are included.

Should I choose the HMT451R7AFR8C-RD, HMT451R7BFR8C-RD or HMT451R7DFR8C-RD equivalent for my server?

All three Hynix part numbers share the same 4GB 1Rx8 DDR3 1866MHz ECC RDIMM specification, so this single module replaces any of them.

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