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Two blue DDR2 DIMM sticks with silver heat spreaders

Kingston Technology Corp.

Kingston Technology Corp. 4GB DDR2 800MHz CL5 DIMM Kit of 2 HyperX Blu

SKU CH-FGBP-B31QT

A 4 GB DDR2 desktop memory kit of two modules running at 800 MHz with CL5 latency

  • Total capacity4 GB
  • CAS latencyCL5
  • 4GB total capacity across two matched DIMMs
  • 800MHz DDR2 speed rated at PC2-6400
  • CL5 latency for responsive desktop performance
  • HyperX Blu series designed for enthusiast systems

4GB DDR2 800MHz CL5 Kit

This Kingston HyperX Blu kit supplies two 4GB DDR2 DIMMs rated at 800MHz with CL5 latency. The non-ECC modules are designed for desktop systems that accept this memory standard. The matched pair enables dual-channel operation on compatible motherboards.

Suits owners of DDR2 platforms

Builders restoring or upgrading older desktops that use DDR2 memory will find the correct speed and timing here. The kit is not suitable for systems requiring ECC registered modules. Buyers whose boards only support later memory generations cannot use this product.

How it compares

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

Price $34.99
Cheaper than about 75% of the 3,647 comparable items (median $90.99).
Total capacity 4 GB
Lower than about 80% of the 3,251 comparable items (median 16 GB).
Price per GB $8.75 per GB
Pricier than about 62% of the 3,251 comparable items (median $6.75 per GB).

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Specifications

Product
Total capacity4 GB
Memory
CAS latencyCL5

Questions about this item

How do I install the DDR2 DIMMs in the kit and which step is often missed?

Align the notch on each DIMM with the motherboard slot key, press down firmly until the retention clips click into place, and verify both modules are fully seated — the clips locking is the step many builders skip.

What maintenance or replacement will the DDR2 kit need over time?

No scheduled maintenance is required; keep the contacts clean and ensure adequate case airflow, and replace the modules only if memory errors appear or a platform upgrade demands a different memory type.

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