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Green rectangular circuit board with black memory chips and gold edge connectors

SAMSUNG

SAMSUNG M378A1K43CB2-CTD 8GB DDR4 2666MHz desktop RAM

SKU CH-S1VG-Z78V5

8 GB DDR4 desktop memory module running at 2666 MHz with CL19 latency and 1.2 V operation

  • Total capacity8 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetSamsung Chipset
  • CAS latencyCL19
  • Rated voltage1.2 V
  • Buffer typeUnbuffered / Unregistered
  • 8GB capacity adds responsive multitasking headroom for everyday workloads
  • DDR4 2666MHz speed delivers 2133 MT/s base bandwidth for smooth data flow
  • 2V operation cuts power draw by up to 40% over previous DDR generations
  • CL19 latency keeps access times tight for snappy application response
  • 288-pin UDIMM form factor drops straight into standard desktop motherboard slots

8GB DDR4 2666MHz UDIMM

This 8GB DDR4 module runs at 2666MHz with CL19 latency and 1.20V operation. It uses a 1Rx8 unbuffered non-ECC design on a 288-pin PCB. The stick is built for standard desktop DIMM slots and carries Samsung DRAM components.

Check motherboard DDR4 slot

Verify that your board accepts DDR4 UDIMM modules and that the CPU memory controller supports 2666MHz operation. The module requires a standard 288-pin DDR4 slot and 1.20V supply. Confirm the platform can run non-ECC unbuffered memory at this speed before ordering.

Sustained throughput at rated frequency

Under continuous load the module maintains its 2666MHz data rate and CL19 timing at 1.20V. The unbuffered topology delivers consistent bandwidth for long rendering or compile sessions. Power draw stays at the rated voltage without thermal throttling on the DRAM chips.

How it compares

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

Price $50.99
Cheaper than about 65% 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 $6.37 per GB
Cheaper than about 54% of the 3,251 comparable items (median $6.75 per GB).

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Specifications

Product
Brand nameSAMSUNG
Model nameM378A1K43CB2--CTD
Total capacity8 GB
Performance
Rated speedDDR4 2666 (PC4 21300)
Processor
ChipsetSamsung Chipset
Memory
CAS latencyCL19
ECC supportNo
Buffer typeUnbuffered / Unregistered
Heat spreaderNo
Power
Rated voltage1.2 V

Questions about this item

Does the 8 GB DDR4 2666 MHz module come alone or with extra parts?

The listing shows one 8 GB UDIMM; no cables, brackets or additional modules are included.

Should I pick the CL19 1.2 V stick or look for a different latency?

This single-rank 1Rx8 module runs at CL19 and 1.2 V; choose it when your board specifies that timing and voltage.

Will the PC4-21300 rating actually run at 2666 MT/s in my desktop?

The module is rated for 2666 MT/s at CL19; the final speed depends on the motherboard's memory controller and BIOS settings.

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