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Two green DDR2 SO-DIMM sticks with black chips

Computer Memory Solutions

Computer Memory Solutions CM256646400SO 4GB (2x2GB) DDR2 800 SO-DIMM

SKU CH-AQF6-D5RYC

A 4 GB DDR2 SO-DIMM kit (2 × 2 GB) validated for the 2.8 GHz 24-inch iMac from early 2008

  • Total capacity4 GB (2 × 2 GB)
  • Rated speedDDR2 800 (PC2 6400)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL6
  • Memory timings6-6-6
  • Rated voltage1.8 V
  • 4 GB kit upgrades early-2008 iMac 24-inch
  • 2×2 GB modules fill both SO-DIMM slots
  • DDR2 800 speed matches factory specification
  • CL6 latency supports stable system operation
  • 8 V unbuffered design meets Apple requirements

What this kit does

This 4 GB kit contains two 2 GB DDR2 800 SO-DIMM modules built for the Apple iMac "Core 2 Duo" 2.8 24-Inch Early 2008. It restores or expands memory on that specific model when the original sticks are missing or faulty.

The spec that decides fit

The modules are 200-pin PC2-6400 DDR2 running at 1.8 V with CL6 6-6-6 timing and unbuffered 2Rx8 organisation. Only systems that accept this exact DDR2 SO-DIMM specification will recognise the memory.

Install notes and common issues

Installation requires opening the iMac memory door and seating both sticks firmly until the latches click. The machine has two slots and a 6 GB maximum using mixed 4 GB and 2 GB modules, so this 2x2 GB kit leaves one upgrade path open. Buyers needing more than 4 GB total capacity should look elsewhere.

Compatibility confirmed

Computer Memory Solutions guarantees operation with the listed iMac model identifiers MB325LL/A, iMac8,1 and A1225. The kit ships as a matched pair from a major brand chipset source and carries a limited lifetime warranty from the manufacturer.

How it compares

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

Price $14.99
Cheaper than about 94% 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 $3.75 per GB
Cheaper than about 86% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameComputer Memory Solutions
Model nameCM256646400SO
Total capacity4 GB (2 × 2 GB)
Product type200-Pin DDR2 SO-DIMM
Performance
Rated speedDDR2 800 (PC2 6400)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL6
Memory timings6-6-6
ECC supportNo
Buffer typeUnbuffered
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage1.8 V
Compatibility
Compatible systemsApple Imac "Core 2 Duo" 2.8 24 in Early 2008
In the box
Included items2 Memory RAM Sticks

Questions about this item

What does the 800 MHz DDR2 rating deliver in an iMac 24-Inch Early 2008?

The kit runs at 800 MHz with CL6 timing, matching the iMac's memory controller and providing 4 GB total across two 2 GB modules.

Which slot type does the 200-pin DDR2 SO-DIMM use and what maximum capacity does the system allow?

The modules fit 200-pin DDR2 SO-DIMM sockets; the iMac supports up to 6 GB using one 4 GB and one 2 GB stick.

What physical clearance do the two 2 GB sticks need inside the iMac?

Standard-height SO-DIMM sticks without heat spreaders install directly into the two memory slots behind the bottom access door.

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