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Green circuit board with black memory chips, gold edge connector, 288-pin DIMM form factor

A-Tech

A-Tech 4GB DDR4 2666MHz CL19 Kingston ACR26D4U9S1KA-4 HP26D4U9S1ME-4 KCP426NS6/4 KVR26N19S6/4

SKU CH-BR7F-QEY2P

A 4 GB DDR4 desktop DIMM running at 2666 MHz with CL19 timing and 1.20 V operation

  • Total capacity4 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor Brand Chips
  • CAS latencyCL19
  • Tested speed2666
  • Rated voltage1.2 V
  • Boosts desktop responsiveness with 4GB DDR4 2666MHz CL19 module
  • Runs at standard 1.20V for lower power draw and heat
  • 288-pin DIMM fits mainstream desktop memory slots
  • Tested with major-brand chips for dependable operation
  • Compatible replacement for listed Kingston and HP part numbers

4GB DDR4 2666MHz Desktop Upgrade

This single 4GB DDR4 DIMM runs at 2666MHz with CL19 latency and standard 1.2V operation. It is built as an unbuffered non-ECC module using major-brand chips for broad AMD and Intel desktop compatibility. The 288-pin form factor fits mainstream desktop motherboards that support DDR4 memory.

Replaces Kingston KVR26N19S6

It serves as a direct equivalent for the listed Kingston part numbers including KVR26N19S6L/4 and KCP426NS6/4. The upgrade is worth it when your system currently runs less than 4GB or uses slower DDR4 speeds, allowing smoother multitasking and faster application loading. Verify your motherboard's maximum supported frequency and capacity before purchasing.

Simple DIMM installation with common pitfalls

Installation requires aligning the notch on the 288-pin module with the slot key and pressing firmly until the retention clips click. Common issues include seating the module incompletely, mixing mismatched speeds which forces the system to run at the lowest common rate, and exceeding the board's maximum capacity per slot.

How it compares

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

Price $29.99
Cheaper than about 79% 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 $7.50 per GB
Pricier than about 55% 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)
Processor
ChipsetMajor Brand Chips
Memory
CAS latencyCL19
Tested speed2666
ECC supportNo
Buffer typeUnbuffered
Power
Rated voltage1.2 V
Compatibility
Recommended forAMD & Intel Compatible

Questions about this item

Will this 288-pin DDR4 DIMM fit my desktop motherboard slot?

The module uses the standard 288-pin DDR4 DIMM form factor, so it fits any desktop board with a DDR4 slot.

Which way does the notch on this CL19 module align during installation?

Line up the off-centre notch on the gold edge with the key in the DDR4 slot, press straight down until both side clips click — do not rock the stick.

Does this 1.20V DDR4 2666MHz stick need any firmware updates or cleaning later?

No firmware or periodic cleaning is required; the module is validated at 2666 MHz and 1.20 V for the life of the system.

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