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Two green 184-pin DDR1 DIMM sticks, no heat spreader

Computer Memory Solutions

Computer Memory Solutions CM128643200DIMM 2GB (2x1GB) DDR1 400MHz CL3 memory upgrade

SKU CH-4MXG-AS6SC

Two 1 GB DDR1 400 MHz CL3 unbuffered DIMMs for Apple iMac G5 and Power Mac G5 systems

  • Total capacity2 GB (2 × 1 GB)
  • Rated speedDDR 400 (PC 3200)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL3
  • Memory timings3-3-3
  • Rated voltage2.6 V
  • 2GB kit adds responsive multitasking for G5 workflows
  • 400MHz DDR1 speed matches original Apple specifications
  • CL3 latency keeps timing tight for stable operation
  • 184-pin unbuffered DIMMs install directly into iMac G5 slots
  • Two 1GB modules enable dual-channel bandwidth on supported models

2GB DDR1 Kit for Apple iMac G5

This kit supplies two 1 GB unbuffered DIMMs built to the PC 3200 standard at 400 MHz with CL3 timing. The modules use 184-pin DDR1 technology and operate at 2.6 V without ECC or heat spreaders. Computer Memory Solutions validates compatibility with the Apple iMac G5 series and lists specific model numbers in the compatibility data.

Suits owners restoring

The memory is qualified for systems such as the Power Mac G5 1.8 GHz, Dual 2 GHz, Dual 2.3 GHz, Dual 2.5 GHz and Dual 2.7 GHz configurations. Builders working on non-Apple platforms, systems that require ECC or registered modules, or machines that need capacities beyond 1 GB per slot should look elsewhere.

184-pin DDR1 PC 3200 interface

Each stick presents a 184-pin DDR1 interface rated for PC 3200 at 400 MHz with 3-3-3 latency. The motherboard must accept unbuffered, non-ECC DDR1 DIMMs at 2.6 V and support 2Rx8 density for the kit to function.

How it compares

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

Price $19.99
Cheaper than about 91% of the 21,161 comparable items (median $397.99).
Total capacity 2 GB (2 × 1 GB)
Lower than about 95% of the 20,941 comparable items (median 32 GB).
Price per GB $10.00 per GB
Typical for this category: the median of 20,941 items is $8.19 per GB.

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Specifications

Product
Brand nameComputer Memory Solutions
Model nameCM128643200DIMM
Total capacity2 GB (2 × 1 GB)
Product type184-Pin DDR SDRAM
Performance
Rated speedDDR 400 (PC 3200)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL3
Memory timings3-3-3
ECC supportNo
Buffer typeUnbuffered
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage2.6 V
Compatibility
Compatible systemsApple Imac G5 Series
In the box
Included items2 Memory RAM Sticks

Questions about this item

Does my iMac G5 need 184-pin DDR1 slots to accept this CM128643200DIMM kit?

Yes, the kit uses 184-pin DDR1 DIMMs that match the slots in the iMac G5 series listed in the compatibility data.

Will these CL3 modules run stably in a Power Mac G5 that originally shipped with CL2.5 memory?

The system will default to the slower CL3 timing, so the 2 GB kit will operate without instability alongside the original modules.

How can I confirm the 2 GB upgrade is recognised after installation?

Open System Profiler on Mac OS X; it should show two 1 GB DIMMs running at 400 MHz (PC3200) for a total of 2 GB.

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