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Green circuit board with black memory chips and gold edge connector

SAMSUNG

SAMSUNG M391A2K43BB1-CTD 16GB DDR4 2666MHz CL19 desktop RAM

SKU CH-TZYN-SVKSG MPN M391A2K43BB1-CTD

16 GB DDR4 desktop module running at 2666 MHz with CL19 latency in a 288-pin UDIMM form factor

  • Capacity16GB
  • 16 GB capacity for larger workloads
  • 2666 MHz DDR4 speed for responsive data access
  • CL19 latency for efficient timing
  • Unbuffered 288-pin UDIMM fits standard desktop slots
  • PC4-21300 specification ensures rated performance

Samsung 16 GB DDR4 module

This unbuffered UDIMM delivers 16 GB of DDR4 memory for desktop systems that use 288-pin slots. It is suited to everyday workloads and general multitasking on compatible motherboards. Buyers who need higher capacity per stick or registered ECC memory for server platforms will not be served by this module.

16 GB capacity with CL19 latency

The single rank runs at 2666 MHz (PC4-21300) with a CAS latency of 19, providing responsive performance for common applications. Headroom is limited to this speed and timing; systems that require faster frequencies or lower latencies will not benefit from this kit.

288-pin UDIMM form factor

The module fits standard DDR4 desktop slots and operates as unbuffered memory without additional buffering circuitry. It requires a motherboard with DDR4-enabled chipsets and 288-pin DIMM sockets. Builders using platforms that only accept registered or load-reduced DIMMs cannot use this product.

商品特色

  • 16 GB capacity for larger workloads
  • 2666 MHz DDR4 speed for responsive data access
  • CL19 latency for efficient timing
  • Unbuffered 288-pin UDIMM fits standard desktop slots
  • PC4-21300 specification ensures rated performance

商品規格

Capacity16GB

商品問答

Will this 288-pin DDR4 DIMM work in a motherboard that already has older DDR4 sticks installed?

Yes, the module uses the standard 288-pin UDIMM form factor and 2666 MHz speed, so it will fit alongside existing DDR4 memory; the system will run all sticks at the lowest common speed and latency.

How can I confirm the memory is running at 2666 MHz with CL19 after installation?

Open Task Manager or a tool like CPU-Z and check the memory tab; it should show 2666 MHz frequency and CAS latency of 19 when the system is under load.

Does the package include only the 16 GB module or are extra items such as a screwdriver or thermal pads supplied?

The box contains one 16 GB UDIMM; no tools, screws or thermal pads are included.

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