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 rectangular circuit board with gold edge connectors and black memory chips

A-Tech

A-Tech 4GB DDR4 2666MHz PC4-21300 DIMM 1Rx8 Desktop Memory

SKU CH-F33Y-WRVT6

A 4GB DDR4 2666MHz desktop DIMM running at 1.2V with 288 pins for AMD and Intel systems

  • Total capacity4 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • Tested speed2666
  • Rated voltage1.2 V
  • Buffer typeUnbuffered
  • Recommended forAMD & Intel Compatible
  • Boosts system responsiveness with 4GB DDR4 2666MHz memory
  • Standard 1.2V voltage ensures efficient desktop operation
  • Unbuffered 288-pin DIMM fits mainstream desktop slots
  • Replaces Samsung M378A5143TB2-CTD module for direct compatibility
  • Rigorously tested for dependable performance and reliability

4GB DDR4 2666MHz Desktop Module

This single 4GB DIMM runs at 2666MHz with a standard 1.20V supply. It uses the 288-pin DDR4 form factor and is built as a 1Rx8 unbuffered non-ECC module. The stick is validated as a direct replacement for the Samsung M378A5143TB2-CTD part number.

Suits basic desktop upgrades.

The module fits AMD and Intel platforms that accept DDR4 2666MHz unbuffered memory. It works well for light office work, web browsing and entry-level productivity. Systems that require ECC error correction, registered buffering or larger individual module capacities should select a different specification.

Steady throughput at rated JEDEC settings

Operating at the rated 2666MHz frequency and 1.20V, the module maintains consistent bandwidth during extended workloads. Unbuffered non-ECC architecture keeps latency predictable for everyday multitasking. Thermal behaviour remains within standard DDR4 limits without requiring active cooling beyond normal case airflow.

How it compares

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

Price $30.99
Cheaper than about 78% of the 3,647 comparable items (median $90.99).
Total capacity 4 GB
Lower than about 80% of the 3,251 comparable items (median 16 GB).
Price per GB $7.75 per GB
Pricier than about 57% of the 3,251 comparable items (median $6.75 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 speedDDR4 2666 (PC4 21300)
Memory
Tested speed2666
ECC supportNo
Buffer typeUnbuffered
Power
Rated voltage1.2 V
Compatibility
Recommended forAMD & Intel Compatible

Questions about this item

Will this 4 GB DDR4 2666 MHz DIMM fit my desktop motherboard?

The module is a 288-pin DDR4 UDIMM running at 1.2 V. It will fit any desktop board with a DDR4 slot that accepts 2666 MHz non-ECC memory.

Can I add this stick alongside my existing 8 GB DDR4 2666 MHz module?

Yes. Matching speed, voltage and non-ECC type lets the two modules run together in dual-channel mode if your board supports it.

Is this the correct replacement for a Samsung M378A5143TB2-CTD module?

The A-Tech part is listed as a compatible replacement for that exact Samsung part number, sharing the same 4 GB capacity, DDR4 2666 MHz speed and 1.2 V operation.

More in Desktop RAM

Similar items