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Two green DDR2 DIMM modules with gold contacts

Computer Memory Solutions

Computer Memory Solutions 2GB DDR2 400MHz 2x1GB Kit

SKU CH-ZNKR-7N4EB

A 2GB kit of two 1GB DDR2 400MHz unbuffered DIMMs with CL3 timing and 1.8V operation

  • Total capacity1 GB
  • Rated speedDDR2 400 (PC2 3200)
  • ChipsetMajor Brand Chipset
  • CAS latency3
  • Memory timings3-3-3
  • Rated voltage1.8 V
  • 2 GB total capacity in a matched 2-piece kit
  • DDR2-3200 speed at 400 MHz for responsive system performance
  • Low CL3 3-3-3 timing reduces latency
  • Unbuffered non-ECC 240-pin DIMM fits standard desktop slots
  • 8 V operation keeps power draw modest

2 GB DDR2 Kit for Legacy Systems

This kit provides two 1 GB unbuffered DIMMs rated at DDR2 400 (PC2 3200) with CL3 3-3-3 timing and 1.8 V operation. It targets owners of older desktops or workstations that require 240-pin non-ECC memory to restore or expand system memory.

Upgrade from Single Modules or Lower Capacity

Replacing a single 1 GB stick with this matched pair enables dual-channel operation on compatible boards, improving throughput for everyday tasks. The jump is worthwhile when the platform supports 2Rx8 organisation and the BIOS recognises the full 2 GB without down-clocking.

Fits 240-Pin DIMM Slots in Matched Pairs

Each module uses the standard 240-pin DDR2 interface and installs in pairs to satisfy dual-channel requirements. The kit frees the builder from sourcing individual sticks of identical specification and avoids the instability that can arise from mixing modules of different rank or timing.

How it compares

Measured against everything we stock in Model-Specific Memory Upgrades, at today’s prices. Recalculated every night.

Price $13.99
Cheaper than about 94% of the 21,161 comparable items (median $397.99).
Total capacity 1 GB
Lower than about 98% of the 20,941 comparable items (median 32 GB).
CAS latency 3
Lower than about 99% of the 483 comparable items (median 22).
Price per GB $13.99 per GB
Pricier than about 60% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Part numberCM128643200D2DIMM
Total capacity1 GB
Performance
Rated speedDDR2 400 (PC2 3200)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latency3
Memory timings3-3-3
ECC supportNo
Buffer typeUnbuffered
Memory rank2Rx8
Power
Rated voltage1.8 V

Questions about this item

Will the 240-pin DIMM modules fit my desktop's DDR2 memory slots?

Yes, each 1 GB module uses the standard 240-pin DDR2 DIMM form factor, so they install directly into any desktop DDR2 slot keyed for 1.8 V operation.

What is the correct way to install the matched pair, and what mistake should I avoid?

Insert both modules into the same-coloured DIMM slots to enable dual-channel mode; the common error is placing them in alternating colours, which forces single-channel operation.

When might a module from this kit need replacement, and what coverage exists?

A module would only need replacement if a manufacturing defect appears, which is covered by the maker's limited lifetime exchange or repair warranty against such defects.

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