We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
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

  • Capacity4GB (2 x 2GB)
  • Type240-Pin DDR2 SDRAM
  • SpeedDDR2 533 (PC2 4200)
  • CAS LatencyCL4
  • Timing4-4-4
  • Voltage1.8V
  • 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.

Highlights

  • 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

Specifications

BrandComputer Memory Solutions
ModelCM256644200DIMMDR
Capacity4GB (2 x 2GB)
Type240-Pin DDR2 SDRAM
SpeedDDR2 533 (PC2 4200)
CAS LatencyCL4
Timing4-4-4
Voltage1.8V
ECCNo
Buffered/RegisteredUnbuffered
Rank2Rx8
ChipsetMajor Brand Chipset
Heat SpreaderNo
Compatible SystemApple Power Mac G5 Dual 2Ghz, M9590Ll/A
Package Content2 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.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.