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Two green DDR2 SODIMM sticks with black chips, no heat spreader

Computer Memory Solutions

Computer Memory Solutions 4GB (2x2GB) DDR2 667MHz SODIMM Apple iMac 20" 2.16GHz

SKU CH-Z5M2-BHNEJ

A 4 GB kit of two 2 GB DDR2 667 MHz SO-DIMM modules for upgrading an Apple iMac 20-inch 2.16 GHz Intel Core 2 Duo

  • Total capacity4 GB (2 × 2 GB)
  • Rated speedDDR2 667 (PC2 5300)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL5
  • Memory timings5-5-5
  • Rated voltage1.8 V
  • 4GB kit upgrades the iMac 20-inch 2.16GHz to its maximum memory
  • DDR2-667 PC2-5300 CL5 timing matches the original factory specification
  • 200-pin SO-DIMM form factor fits the two memory slots exactly
  • Unbuffered non-ECC design works with the Intel Core 2 Duo platform
  • Two 2GB modules from Computer Memory Solutions with lifetime warranty

System-Specific DDR2 Upgrade

This 4 GB kit contains two 2 GB DDR2-667 SO-DIMM modules built for the Apple iMac 20-inch 2.16 GHz Intel Core 2 Duo (MA589LL). The unbuffered, non-ECC memory runs at 1.8 V with CL5 5-5-5 timings and uses 200-pin connectors. It is intended for owners of that exact iMac model who want to reach the system’s 4 GB maximum.

Check Your iMac Model First

Verify that your iMac is the 20-inch 2.16 GHz Intel Core 2 Duo variant identified by Apple part numbers MA346G/A, MA837G/A or MA589LL. This kit only fits machines that accept 200-pin DDR2 SO-DIMMs running at 667 MHz (PC2-5300). Other iMac sizes, speeds or generations use different memory and will not accept these modules.

Fills Both Slots for Full Capacity

The iMac 20-inch 2.16 GHz has two SO-DIMM sockets supporting a total of 4 GB. Installing this matched pair occupies both slots and delivers the maximum addressable memory for the platform. No further modules can be added once the kit is in place, so the upgrade is complete in a single step.

How it compares

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

Price $13.99
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 $3.50 per GB
Cheaper than about 87% of the 20,941 comparable items (median $8.19 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameComputer Memory Solutions
Model nameCM256645300SO
Total capacity4 GB (2 × 2 GB)
Product type200-Pin DDR2 SO-DIMM
Performance
Rated speedDDR2 667 (PC2 5300)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL5
Memory timings5-5-5
ECC supportNo
Buffer typeUnbuffered
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage1.8 V
Compatibility
Compatible systemsApple Imac 20 in 2.16 GHz Intel Core 2 Duo (Ma589Ll)
In the box
Included items2 Memory RAM Sticks

Questions about this item

What comes in the box with the CM256645300SO kit and is anything else needed?

The package includes two 2 GB DDR2 667 MHz SODIMM sticks for a total of 4 GB. No extra parts or cables are required for installation.

Should I choose the 2×2 GB kit or look for a single 4 GB module for the iMac 20-inch 2.16 GHz?

The iMac uses two memory slots, so the matched 2×2 GB kit fills both slots and enables dual-channel operation for the best performance.

What does the PC2-5300 667 MHz rating mean once the modules are installed in the iMac?

The memory will run at 667 MHz with CL5 timing at 1.8 V, giving the maximum supported bandwidth for this model.

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