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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 533 memory upgrade

SKU CH-AFXW-GNK6X

A 4 GB kit of two 2 GB DDR2 533 DIMMs built for Apple Power Mac G5 Dual 2 GHz and Quad 2.5 GHz systems from 2005

  • 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 kit (2 × 2GB) expands the Power Mac G5 to its 16GB maximum
  • DDR2-533 (PC2-4200) CL4 1.8V modules match the factory memory specification
  • 240-pin unbuffered non-ECC DIMMs install directly into the eight available sockets
  • Tested compatible with Apple Power Mac G5 Dual 2GHz M9590LL/A and Quad 2.5GHz M9592LL/A
  • Computer Memory Solutions limited lifetime warranty backs the upgrade

Targeted Apple G5 Upgrade

This 4GB kit contains two 2GB 240-pin DDR2 DIMMs rated at 533 MHz with CL4 timing and 1.8 V operation. The modules are unbuffered, non-ECC and built with major-brand chipsets. They are validated for the Apple Power Mac G5 Dual 2GHz (M9590LL/A) and related Late 2005 models.

Suits G5 owners adding matched pairs

Owners of the listed Power Mac G5 systems who need a matched pair to fill available slots will benefit from the guaranteed compatibility. Builders working on any other platform, or who require ECC, registered modules, or a different DDR generation, should look elsewhere because this kit is DDR2 only and not interchangeable with newer standards.

Two sticks enable dual-channel operation

The package supplies exactly two DIMMs so the G5 memory controller can run in dual-channel mode when installed in the correct slot pairs. No heat spreaders, software utilities or extra cables are included; the lifetime warranty from Computer Memory Solutions applies when purchased directly from the manufacturer.

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 Dual 2 GHz, M9590Ll/A
In the box
Included items2 Memory RAM Sticks

Questions about this item

Does my Apple Power Mac G5 need 240-pin DDR2 slots to use this CM256644200DIMMDR kit?

Yes, each module is a 240-pin DDR2 DIMM and the compatible systems listed use that slot type.

Will the 533 MHz speed of these modules match the memory bus of a Late 2005 Power Mac G5?

The kit is rated DDR2 533 (PC2-4200) and the supplier confirms compatibility with the Late 2005 Dual 2 GHz and Quad 2.5 GHz models.

How can I verify both 2 GB sticks are recognised after installation?

The system profiler should show 4 GB total across the eight available slots, confirming both modules are detected.

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