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Green PCB desktop DIMM with black memory chips on both sides, 184 gold pins, no heat spreader

Patriot Memory

Patriot Memory PSD1G400 1GB DDR 400 desktop RAM

SKU CH-40B3-04CX2 MPN PSD1G400

1GB DDR 400 desktop module with CL3 timing and 2.60V operation for older PC3200 systems

  • Total capacity1 GB
  • Rated speedDDR 400 (PC 3200)
  • CAS latencyCL3
  • Memory timings3-3-3
  • Rated voltage2.6 V
  • Buffer typeUnbuffered
  • Faster system response from DDR 400 speed
  • Quicker data access with CL3 latency
  • Stable operation at 2.60V standard voltage
  • Reliable compatibility via 184-pin unbuffered design
  • Quality assured through 100% factory testing

1GB DDR 400 Desktop Module

This Patriot Memory module provides 1GB of unbuffered DDR 400 (PC 3200) memory for desktop systems. It runs at CL3 latency with 3-3-3 timings and a 2.60V operating voltage. The 184-pin DIMM uses a double-sided, two-rank design and includes Serial Presence-Detect for automatic configuration.

Suitable for legacy DDR platforms needing 1GB CL3

Builders repairing or upgrading older desktops that require DDR 400 memory with 3-3-3 timings will find this module a direct fit. Systems that demand ECC, registered buffering, lower voltage, or higher density than 1GB per slot should select a different part.

184-pin DDR 400 (PC 3200) interface

The module conforms to the 184-pin DDR SDRAM form factor and the JEDEC PC 3200 standard. Motherboards must accept 184-pin unbuffered DDR 400 DIMMs at 2.60V; modules with a different pin count, voltage, or speed grade will not function in the same slots.

How it compares

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

Price $20.99
Cheaper than about 87% 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 $20.99 per GB
Pricier than about 90% of the 3,251 comparable items (median $6.75 per GB).

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Specifications

Product
Brand namePatriot
Model namePSD1G400
Total capacity1 GB
Performance
Rated speedDDR 400 (PC 3200)
Memory
CAS latencyCL3
Memory timings3-3-3
ECC supportNo
Buffer typeUnbuffered
Heat spreaderNo
Power
Rated voltage2.6 V
Size & build
Shipping weight0.02 kg
Package size171 × 54 × 16 mm

Questions about this item

Will this module fit my older desktop motherboard?

It uses the standard 184-pin DIMM form factor and runs at 2.60V, matching the physical slot and voltage of DDR 400 (PC 3200) desktop boards.

What do the CL3 and 3-3-3 timing figures mean for daily use?

CAS Latency 3 and 3-3-3 timings indicate the delay cycles for data access; lower values reduce wait states, so applications and games load faster on compatible systems.

Is this a single-sided or double-sided stick, and does it matter?

The module is a 2-rank double-sided design with 8192 refresh cycles per 64 ms; most DDR 400 boards accept both ranks, but check your manual for maximum rank limits.

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