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Green circuit board with black chips and gold 288-pin edge connector

A-Tech

A-Tech 16GB DDR4 2666 CL19 1.2V Desktop RAM

SKU CH-20M1-B6MMP

16 GB DDR4 2666 CL19 desktop DIMM with major-brand chips and 1.2 V operation

  • Total capacity16 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor Brand Chips
  • CAS latencyCL19
  • Tested speed2666
  • Rated voltage1.2 V
  • 16 GB module doubles capacity for heavier multitasking
  • DDR4 2666 speed matches PC4-21300 bandwidth rating
  • CL19 latency at 1.2 V keeps power draw low
  • 288-pin unbuffered DIMM fits standard desktop slots
  • Tested with major-brand chips for reliable operation

16GB DDR4 2666 Desktop Module

This 16GB DDR4 2666 DIMM is a non-ECC unbuffered memory upgrade for desktop computers. It uses major brand chips tested at 2666MHz with CL19 latency and standard 1.2V operation. The single module design fits a 288-pin slot and is built to replace specific IBM-Lenovo part numbers.

Compatibility Check Before Ordering

Verify that your motherboard accepts DDR4 2666 non-ECC unbuffered DIMMs and has a free 288-pin slot. Confirm the system supports 16GB module density and 1.2V voltage. Cross-reference the original IBM-Lenovo part numbers 4X70R38788 or 4ZC7A08702 if you are replacing those exact modules.

Sustained Load Behaviour

Under continuous workloads the module maintains its rated 2666MHz frequency and CL19 timing at 1.2V without overclocking. Standard voltage keeps power draw predictable during long rendering or multitasking sessions. Quality assurance testing ensures stable operation across extended periods of heavy memory use.

How it compares

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

Price $85.99
Typical for this category: the median of 3,647 items is $90.99.
Total capacity 16 GB
Typical for this category: the median of 3,251 items is 16 GB.
Price per GB $5.37 per GB
Cheaper than about 67% of the 3,251 comparable items (median $6.75 per GB).

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Specifications

Product
Brand nameA-Tech
Total capacity16 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 module work in a desktop that requires DDR4 2666 with CL19 timing?

Yes, it is a 16 GB DDR4 2666 CL19 unbuffered DIMM that runs at 1.2 V and fits standard 288-pin desktop slots.

Is this a direct replacement for the IBM-Lenovo part numbers 4X70R38788 and 4ZC7A08702?

The module is listed as a compatible equivalent for both 4X70R38788 and 4ZC7A08702, matching the same DDR4 2666 specification.

Does the kit include more than one stick, or is it a single 16 GB module?

It is a single 16 GB module (1 x 16 GB), so you add one DIMM to an available slot.

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