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Two green DDR2 memory sticks, 240-pin, no heat spreader

Computer Memory Solutions

Computer Memory Solutions 4GB (2x2GB) DDR2 5300 667MHz ECC Fully Buffered DIMM memory upgrade

SKU CH-HDWE-VPRKX

A 4 GB DDR2 kit with ECC fully buffered DIMMs for Apple Mac Pro 3.2 GHz Xeon systems

  • Total capacity4 GB (2 × 2 GB)
  • Rated speedDDR2 667 (PC2 5300)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL5
  • Memory timings5-5-5
  • Rated voltage1.8 V
  • ECC protection prevents data corruption in critical workloads
  • Fully Buffered DIMM architecture supports high-capacity server configurations
  • 667 MHz DDR2 speed matches Mac Pro system requirements
  • 2 x 2 GB kit enables dual-channel installation
  • Compatible with Apple Mac Pro Xeon 2.8, 3.0, 3.2 GHz models

Kit for Apple Mac Pro Quad Core 3.2GHz

This 4GB kit contains two 2GB DDR2-667 fully buffered DIMMs built for the Apple Mac Pro Quad Core 3.2GHz. The modules use 240-pin DDR2 SDRAM with ECC and run at 1.8V. They are intended for server-grade memory slots in this specific workstation.

Fully buffered DDR2 ECC requirement

The Mac Pro Quad Core 3.2GHz requires fully buffered DDR2 ECC memory; standard unbuffered or non-ECC DDR2 will not function. These modules meet the CL5 5-5-5 timing and PC2-5300 specification demanded by the system's memory controller.

Capacity and headroom

Each of the two memory cards accepts four modules for a maximum of 16GB per card and 64GB total across eight slots. This 4GB kit occupies two slots; the remaining six slots allow further expansion up to the 64GB ceiling supported by third-party configurations.

How it compares

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

Price $28.99
Cheaper than about 86% 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 $7.25 per GB
Cheaper than about 56% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameComputer Memory Solutions
Model nameCM256725300FBDIMM
Total capacity4 GB (2 × 2 GB)
Product type240-Pin DDR2 SDRAM
Performance
Rated speedDDR2 667 (PC2 5300)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL5
Memory timings5-5-5
ECC supportYes
Buffer typeFully Buffered
Memory rank2Rx4
Heat spreaderNo
Power
Rated voltage1.8 V
Compatibility
Compatible systemsApple Mac Pro Quad Core 3.2 GHz
In the box
Included items2 Memory RAM Sticks

Questions about this item

How does the 667 MHz speed affect real-world performance in a Mac Pro?

The modules run at DDR2-667 (PC2-5300) with CL5 timing, matching the memory controller on the 2.8, 3.0 and 3.2 GHz Xeon models so the system operates at its rated bandwidth.

What does the fully buffered DIMM interface mean for compatibility and capacity?

Fully Buffered DIMM architecture is required by the Mac Pro memory cards; the kit installs in pairs across the eight slots, supporting up to 64 GB when all slots are populated with compatible modules.

What physical requirements must the Mac Pro meet to accept these 240-pin modules?

The Mac Pro uses 240-pin DDR2 FB-DIMM slots on dedicated memory cards; a special heat sink is required and modules must be installed in matched pairs per card.

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