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Green circuit board with black memory chips and gold edge connector

Patriot Memory

Patriot Memory PSD21G8002 1GB DDR2 800 Desktop RAM

SKU CH-M5FZ-N83DK MPN PSD21G8002

A 1GB DDR2 800 desktop module rated CL5 at 1.80V for older system upgrades

  • Total capacity1 GB
  • Rated speedDDR2 800 (PC2 6400)
  • CAS latencyCL5
  • Rated voltage1.8 V
  • Buffer typeUnbuffered
  • Key featuresRoHS Compliant
  • Boosts older desktop responsiveness with 1GB DDR2 800 capacity
  • Delivers stable operation at standard 1.80V voltage
  • Keeps latency low with CAS latency CL5 timing
  • Meets PC2 6400 bandwidth specification for compatible boards
  • RoHS compliant build reduces hazardous substances

1GB DDR2 800 Desktop Module

This Patriot Memory PSD21G8002 module provides 1GB of DDR2 800 desktop memory. It runs at PC2 6400 speed with a CAS latency of CL5 and a voltage of 1.80V. The unbuffered, non-ECC design fits standard desktop DIMM slots without a heat spreader. It is a straightforward upgrade for older compatible systems.

Suits legacy DDR2 upgrades

This module suits users upgrading or repairing a desktop that specifically requires DDR2 800 memory. It is not for builders who need higher capacities, lower latencies, or platforms that use a different memory generation. Systems limited to slower DDR2 speeds or those requiring registered or ECC modules should look at other options.

PC2 6400 speed rating

The PC2 6400 designation confirms the 800 MT/s data rate that the motherboard must support. Matching this speed rating is the single specification that decides whether this module will operate correctly in the target system.

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
Brand namePatriot
Model namePSD21G8002
Total capacity1 GB
Performance
Rated speedDDR2 800 (PC2 6400)
Memory
CAS latencyCL5
ECC supportNo
Buffer typeUnbuffered
Heat spreaderNo
Power
Rated voltage1.8 V
Size & build
Shipping weight0.03 kg
Package size168 × 50 × 16 mm

Questions about this item

Will this DDR2 800 module fit a motherboard that only accepts DDR2 memory?

Yes, it is a DDR2 800 (PC2 6400) unbuffered DIMM, so it fits any desktop board with DDR2 slots that support 800 MHz operation.

Does the CL5 latency at 1.80 V match the standard JEDEC profile for DDR2 800?

CL5 at 1.80 V is the standard JEDEC timing for DDR2 800, so the module will run at its rated speed without manual BIOS changes.

Can I add this 1 GB stick alongside an existing 1 GB DDR2 800 module for dual-channel operation?

Yes, pairing two identical 1 GB DDR2 800 CL5 modules will enable dual-channel mode on a board that supports it.

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