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Two green DDR2 DIMMs with black chips, 240 pins

SAMSUNG

SAMSUNG 4GB (2x2GB) DDR2 800 PC2-6400U Desktop RAM

SKU CH-QT8F-45621

A 4 GB DDR2 desktop memory kit running at 800 MHz with CL6 latency and 1.8 V operation

  • Capacity4GB (2 x 2GB)
  • 4GB kit expands desktop capacity with two 2GB modules
  • DDR2 800 speed moves data at 800Mhz for responsive multitasking
  • CL6 latency and 5ns cycle time reduce access delays
  • Non-ECC unbuffered design fits standard desktop motherboards
  • 8V operation matches DDR2 specification for stable performance

4GB DDR2 kit for legacy desktops

This Samsung kit provides 4GB of DDR2 memory in two 2GB modules. It is intended for older desktop systems that require PC2-6400U unbuffered non-ECC DIMMs. The 240-pin form factor fits standard DDR2 slots on compatible motherboards.

Sustained operation at 800 MHz

Running at a 200 MHz memory clock with CL6 timings and a 5 ns cycle time, the modules maintain their rated 800 MHz data rate under continuous load. The 1.8 V operating voltage matches the DDR2 specification, allowing stable long-term use in supported platforms.

Replaces slower or smaller DDR2 kits

This kit upgrades systems currently running lower-capacity or lower-speed DDR2 memory. The jump is worthwhile when the motherboard accepts 800 MHz PC2-6400U modules and the workload benefits from the full 4GB capacity. Buyers who need ECC error correction or registered DIMMs cannot use this product.

Highlights

  • 4GB kit expands desktop capacity with two 2GB modules
  • DDR2 800 speed moves data at 800Mhz for responsive multitasking
  • CL6 latency and 5ns cycle time reduce access delays
  • Non-ECC unbuffered design fits standard desktop motherboards
  • 8V operation matches DDR2 specification for stable performance

Specifications

Capacity4GB (2 x 2GB)

Questions about this item

How much power does this 1.8 V DDR2 kit draw when the system runs all day?

Each module operates at 1.8 volts with a 200 MHz clock and CL6 timings; total consumption depends on the motherboard's memory controller and how heavily the 4 GB capacity is utilised.

What motherboard slot is required to install these 240-pin DIMMs?

A desktop board with a standard 240-pin DDR2 socket keyed for PC2-6400U unbuffered non-ECC memory.

Will this CL6 PC2-6400U kit run stably if I keep slower DDR2 modules in the other slots?

The memory controller will clock all populated slots to the slowest module's speed and timings, so this kit will downshift to match the older sticks.

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