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Computer Memory Solutions

Computer Memory Solutions 8GB (2x4GB) DDR3 1600MHz SO-DIMM for iMac 27-Inch Late 2012

SKU CH-S2DH-ZQMPV

Dual 4 GB DDR3 1600 MHz SO-DIMM kit upgrades the 27-inch 2012 iMac to 8 GB total capacity

  • Total capacity8 GB (2 × 4 GB)
  • Rated speedDDR3 1600 (PC3 12800)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL11
  • Memory timings11-11-11
  • Rated voltage1.5 V
  • 8GB kit upgrades a 27-inch iMac from late 2012
  • Two 4GB DDR3 1600MHz SO-DIMM modules install in matched pair
  • CL11 1.5V unbuffered memory meets Apple factory timing spec
  • 204-pin form factor fits the four SO-DIMM slots inside
  • Compatible with Core i5 2.9GHz model A1419 per CMS guarantee

System-Specific DDR3 SO-DIMM Kit

This 8GB kit contains two 4GB modules built to the DDR3 1600 standard. It is designed for the Apple iMac 27-Inch Late 2012 with a Core i5 2.9 GHz processor. The unbuffered, non-ECC memory installs directly into the system's SO-DIMM slots.

204-Pin DDR3 1600MHz Interface

The modules use a 204-pin SO-DIMM form factor and run at PC3-12800 speed with CL11 timing at 1.5V. This exact specification determines whether the memory will be recognised and run stably in the target iMac. The system accepts up to 32GB across four sockets.

Ideal for Late 2012 iMac 27-Inch Owners

This kit suits owners of the specified Late 2012 27-inch iMac who want a matched pair for dual-channel performance. Buyers with different iMac years, screen sizes or desktop Mac models should verify their exact model identifier before purchasing.

How it compares

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

Price $20.99
Cheaper than about 90% of the 21,161 comparable items (median $397.99).
Total capacity 8 GB (2 × 4 GB)
Lower than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $2.62 per GB
Cheaper than about 91% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameComputer Memory Solutions
Model nameCM5126412800SODRH
Total capacity8 GB (2 × 4 GB)
Product type204-Pin DDR3 SO-DIMM
Performance
Rated speedDDR3 1600 (PC3 12800)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL11
Memory timings11-11-11
ECC supportNo
Buffer typeUnbuffered
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage1.5 V
Compatibility
Compatible systemsApple Imac "Core I5 in 2.9 27 in (Late 2012)
In the box
Included items2 Memory RAM Sticks

Questions about this item

What does the 1600MHz rating actually deliver inside the iMac?

The modules run at 1600MHz (PC3-12800) with CL11 timing at 1.5V, matching the iMac's memory controller specification for full rated bandwidth.

How does the 204-pin DDR3 SO-DIMM interface limit the upgrade?

The 204-pin DDR3 SO-DIMM slot accepts only DDR3 modules; the iMac's four sockets support a maximum of 32GB total using this format.

Will the two 4GB sticks fit the Late 2012 27-inch iMac without modification?

Yes, each stick is a standard 204-pin SO-DIMM with no heat spreader, designed to seat directly in the four accessible memory slots of the A1419 chassis.

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