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 black memory chips and gold edge connectors

Crucial

Crucial CT8G4DFS8266 8GB DDR4 2666 desktop RAM

SKU CH-8W92-XB41K MPN CT8G4DFS8266

8GB DDR4 2666 desktop memory module with CL19 latency and 1.20V operation

  • Total capacity8 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • CAS latencyCL19
  • Rated voltage1.2 V
  • Buffer typeUnbuffered
  • Key featuresSpeeds start at 2133 MT/s and faster data rates are expected
  • Boosts bandwidth by up to 32% over DDR3
  • Cuts power draw by up to 40% versus DDR3
  • Runs at 2666 MT/s with CL19 latency
  • Operates at 1.20V for cooler operation
  • Unbuffered non-ECC design suits standard desktop boards

8GB DDR4 2666 Desktop Module

This Crucial CT8G4DFS8266 module provides 8GB of DDR4 memory rated at 2666 MT/s with a CAS latency of 19. It operates at the standard 1.20V and uses an unbuffered, non-ECC design. The DIMM is built for desktop systems that support DDR4 technology.

Suits mainstream desktop upgrades.

The stick fits standard consumer motherboards that accept unbuffered DDR4 DIMMs. It will not work in servers or workstations that require registered or ECC memory. Builders needing capacities beyond 8GB per slot or speeds higher than 2666 MT/s should consider other modules.

Speed rating DDR4 2666 (PC4 21300)

The 2666 MT/s data rate sets the peak bandwidth this module can deliver. Systems limited to lower DDR4 speeds will run the memory at the slower rate, while platforms that support 2666 MT/s gain the full throughput advantage over DDR3.

How it compares

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

Price $60.99
Cheaper than about 60% of the 3,647 comparable items (median $90.99).
Total capacity 8 GB
Lower than about 60% of the 3,251 comparable items (median 16 GB).
Price per GB $7.62 per GB
Pricier than about 56% 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 nameCrucial
Model nameCT8G4DFS8266
Total capacity8 GB
Performance
Rated speedDDR4 2666 (PC4 21300)
Memory
CAS latencyCL19
ECC supportNo
Buffer typeUnbuffered
Power
Rated voltage1.2 V

Questions about this item

How much heat and power does the 1.20V DDR4 2666 module draw when running all day?

The module operates at 1.20V, reducing power consumption by up to 40% versus DDR3, so it generates less heat during continuous use.

What motherboard slot and memory controller does the CT8G4DFS8266 require to work?

It needs a DDR4 DIMM slot and a memory controller that supports DDR4 2666 (PC4 21300) unbuffered non-ECC memory.

Will this DDR4 2666 stick run alongside the DDR3 memory I already have installed?

No, DDR4 and DDR3 use different physical slots and voltages, so they cannot be mixed in the same system.

More in Desktop RAM

Similar items