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
Eight black DDR4 UDIMM sticks, no heat spreaders, 288-pin each

OWC

OWC 128GB (8×16GB) DDR4 2666 CL19 desktop RAM

SKU CH-WB1E-9YKSQ

Eight 16 GB unbuffered DDR4 modules at 2666 MHz CL19 deliver 128 GB for desktops, workstations and NAS systems with 1.2 V JEDEC operation

  • Total capacity128 GB (8 × 16 GB)
  • Rated speedDDR4 2666 (PC4 21300)
  • CAS latencyCL19
  • Rated voltage1.2 V
  • Buffer typeUnbuffered
  • Kit configurationDual Channel Kit
  • 128 GB total capacity across eight 16 GB modules
  • DDR4 2666 speed with CL19 latency for responsive multitasking
  • Low 1.2 V operation reduces system power draw
  • Unbuffered non-ECC UDIMM fits standard desktop motherboards
  • JEDEC and RoHS compliant for warranty-safe upgrades

128 GB DDR4 kit for desktops

This OWC kit supplies 128 GB across eight 16 GB UDIMMs. It targets desktop PCs, workstations and NAS units that accept 288-pin DDR4 modules. The CL19 timing and 1.2 V operation follow standard JEDEC specifications.

Upgrade from 2133 MHz or 2400 MHz

The modules run at 2666 MHz (PC4-21300) and are backward compatible with 2133 MHz and 2400 MHz systems. The jump is worthwhile when the platform supports 2666 MHz natively and the workload benefits from higher bandwidth.

DDR4 2666 interface limits

The dual-channel kit populates eight slots, so the motherboard must provide enough DIMM sockets and chipset support for the full capacity. Maximum throughput is bounded by the 2666 MT/s data rate and CL19 latency of the JEDEC standard.

How it compares

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

Price $707.99
Pricier than about 90% of the 3,647 comparable items (median $90.99).
Total capacity 128 GB (8 × 16 GB)
Higher than about 93% of the 3,251 comparable items (median 16 GB).
Price per GB $5.53 per GB
Cheaper than about 65% 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 nameOWC
Part number2U6D42R8128K
Total capacity128 GB (8 × 16 GB)
Product colorBlack
Performance
Rated speedDDR4 2666 (PC4 21300)
Memory
CAS latencyCL19
ECC supportNo
Buffer typeUnbuffered
Kit configurationDual Channel Kit
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Recommended forDesktops
More details
LED lightingNone

Questions about this item

Will the 288-pin UDIMM modules fit my desktop motherboard slots?

Each module uses the standard 288-pin DDR4 UDIMM form factor, so it fits any desktop board with DDR4 DIMM slots.

How do I seat the 8 modules correctly in a dual-channel layout?

Populate matching-coloured slot pairs first; the common mistake is filling four slots on one channel and leaving the other channel empty.

Do these 1.2 V modules need active cooling or thermal paste later?

No heat spreader is fitted and the JEDEC 1.2 V rating runs cool; just keep case airflow clear and reseat only if troubleshooting.

More in Desktop RAM

Similar items