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Two green DDR2 DIMM sticks with black chips, no heat spreader

Computer Memory Solutions

Computer Memory Solutions CM256644200DIMMDR 4GB (2x2GB) DDR2 533MHz PC2-4200 DIMM

SKU CH-VJW8-3GDCE

A 4 GB matched pair of DDR2 533 MHz DIMMs validated for Apple Power Mac G5 Quad Core 2.5 GHz systems

  • Total capacity4 GB (2 × 2 GB)
  • Rated speedDDR2 533 (PC2 4200)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL4
  • Memory timings4-4-4
  • Rated voltage1.8 V
  • 4GB total capacity delivered as a matched 2x2GB kit
  • DDR2 533MHz PC2-4200 speed rated for CL4 4-4-4 timing
  • 8V unbuffered non-ECC 240-pin DIMM modules
  • Guaranteed compatible with Apple Power Mac G5 Quad Core 2.5GHz M9592LL/A
  • Lifetime warranty from Computer Memory Solutions

System-specific DDR2 kit

This 4 GB kit contains two 2 GB unbuffered DIMMs built to the DDR2 533 standard. It is designed for Apple Power Mac G5 models from late 2005 that require 240-pin PC2-4200 memory running at 1.8 V.

240-pin DDR2 533 interface

The modules use a 240-pin DDR2 SDRAM interface clocked at 533 MHz with CL4 4-4-4 timings. Only systems that accept PC2-4200 non-ECC DIMMs at this exact pin count and voltage will recognise the kit.

Steady operation at rated speed

Under continuous load the sticks maintain their specified 533 MHz frequency and 1.8 V supply without throttling. Builders who need ECC protection or registered buffering must choose a different module type.

How it compares

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

Price $18.99
Cheaper than about 91% of the 21,161 comparable items (median $397.99).
Total capacity 4 GB (2 × 2 GB)
Lower than about 90% of the 20,941 comparable items (median 32 GB).
Price per GB $4.75 per GB
Cheaper than about 80% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameComputer Memory Solutions
Model nameCM256644200DIMMDR
Total capacity4 GB (2 × 2 GB)
Product type240-Pin DDR2 SDRAM
Performance
Rated speedDDR2 533 (PC2 4200)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL4
Memory timings4-4-4
ECC supportNo
Buffer typeUnbuffered
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage1.8 V
Compatibility
Compatible systemsApple Power Mac G5 Quad Core 2.5 GHz M9592Ll/A
In the box
Included items2 Memory RAM Sticks

Questions about this item

What does the PC2-4200 rating mean once the memory is installed in a Power Mac G5?

PC2-4200 indicates DDR2-533 speed with a 4-4-4 timing profile, matching the G5's memory bus so the system can address the full 4 GB kit without downclocking.

Which memory standard and pin layout does this kit use?

It uses 240-pin DDR2 SDRAM DIMMs, the physical and electrical interface required by the Power Mac G5 models listed.

What physical space and slot count are needed to install the kit?

Two adjacent 240-pin DIMM slots are required; the G5 Quad 2.5 GHz and Dual 2.0/2.3 GHz (Late 2005) each provide eight such slots.

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