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Green printed circuit board with black memory chips and gold edge connector

Kingston Technology Corp.

Kingston Technology Corp. TCM633-QAC 1GB DDR2 PC2-6400 800MHz desktop RAM

SKU CH-XN91-TTPKW

1GB DDR2 desktop module running at 800MHz with 240-pin DIMM form factor

  • Total capacity1 GB
  • 1GB capacity for basic desktop tasks
  • DDR2 PC2-6400 800MHz speed for responsive performance
  • Non-ECC single rank design for standard compatibility
  • 240-pin DIMM format fits desktop motherboards

1 GB DDR2 desktop memory module

This Kingston TCM633-QAC stick adds 1 GB of DDR2 memory to a desktop system. It uses the PC2-6400 standard and runs at 800 MHz. The module is non-ECC and single rank. It is suited for older platforms that require DDR2 DIMMs.

240-pin DIMM form factor

The module fits a 240-pin DDR2 DIMM slot, which is the single specification that decides whether this is the correct part. Builders whose motherboards use a different pin count or memory type cannot use this stick. Buyers who need more than 1 GB per slot should look elsewhere.

How it compares

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

Price $13.99
Cheaper than about 93% of the 3,647 comparable items (median $90.99).
Total capacity 1 GB
Lower than about 98% of the 3,251 comparable items (median 16 GB).
Price per GB $13.99 per GB
Pricier than about 83% of the 3,251 comparable items (median $6.75 per GB).

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Specifications

Product
Total capacity1 GB

Questions about this item

What does the 800MHz rating mean once this module is installed in a desktop?

The 800MHz rating indicates the module runs at 800 million cycles per second, delivering a peak bandwidth of 6400 MB/s when the memory controller operates at that speed.

How does the PC2-6400 standard limit real-world throughput on a 240-pin DDR2 system?

PC2-6400 caps the theoretical maximum transfer rate at 6400 MB/s; actual throughput will be lower due to latency, controller efficiency and other system overheads.

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