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Four green DDR3 SODIMM modules in a clear bag

Computer Memory Solutions

Computer Memory Solutions CM5126410600SODRH 16GB (4x4GB) DDR3 1333MHz SODIMM memory upgrade

SKU CH-3RJW-3CFMZ

A 16 GB DDR3 1333 MHz SODIMM kit of four 4 GB modules for compatible Apple iMac models

  • Total capacity16 GB (4 × 4 GB)
  • Rated speedDDR3 1333 (PC3 10600)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL7
  • Memory timings7-7-7
  • Rated voltage1.5 V
  • 16GB kit upgrades compatible Apple iMac models
  • Four 4GB SODIMM modules fill all four slots
  • DDR3 1333MHz CL7 timing for responsive performance
  • 5V unbuffered non-ECC design matches system specs
  • Manufacturer lifetime warranty backs long-term reliability

16GB DDR3 SODIMM kit for Apple iMac

This 16GB kit contains four 4GB DDR3 1333MHz SODIMM modules built to PC3-10600 specification. It is designed as a direct memory upgrade for specific Apple iMac models including the 21.5-inch and 27-inch systems listed in the compatibility data. The modules are unbuffered, non-ECC, and operate at 1.5V with CL7 timing.

Suits owners of listed iMacs; not for other systems

This kit suits owners of the compatible Apple iMac models identified by the supplier, such as the 21.5-inch 2.5GHz Core i5 (MC309LL/A) and several 27-inch variants. It will not help users whose computers require a different memory generation, a different pin count, ECC functionality, or registered modules. Buyers should verify their exact model number before purchasing.

DDR3 1333MHz SODIMM generation and pin count

The decisive specification is the DDR3 1333MHz (PC3-10600) 204-pin SODIMM form factor. Only systems that accept this exact generation, speed, and pin layout can use these modules. The kit provides four 2Rx8 unbuffered sticks totalling 16GB, matching the supplier's tested compatibility list for the named iMac models.

How it compares

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

Price $69.99
Cheaper than about 73% of the 21,161 comparable items (median $397.99).
Total capacity 16 GB (4 × 4 GB)
Lower than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $4.37 per GB
Cheaper than about 82% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameComputer Memory Solutions
Model nameCM5126410600SODRH
Total capacity16 GB (4 × 4 GB)
Product type204-Pin DDR3 SO-DIMM
Performance
Rated speedDDR3 1333 (PC3 10600)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL7
Memory timings7-7-7
ECC supportNo
Buffer typeUnbuffered
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage1.5 V
Compatibility
Compatible systemsApple Imac 21.5 in 2.5 GHz Intel Core I5 (Mc309Ll/A)
In the box
Included items4 Memory RAM Sticks

Questions about this item

What does the kit include and is anything else required for installation?

The kit includes four 4 GB DDR3 1333 MHz 204-pin SO-DIMM modules for a total of 16 GB. No additional parts are required; the modules install directly into the iMac memory slots.

Should I choose this 16 GB kit or a different capacity for my iMac?

This 16 GB kit fills all four slots on the compatible 21.5-inch and 27-inch iMac models listed. Apple officially supports 16 GB, while the system can address up to 32 GB if higher-capacity modules are used.

What does the PC3-10600 1333 MHz rating mean once the memory is installed?

The modules run at 1333 MHz with CL7 7-7-7 timings at 1.5 V, delivering the standard DDR3 bandwidth for the supported iMac models without overclocking or voltage changes.

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