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Two green DDR3L SO-DIMM sticks, 204-pin, no heat spreader

Computer Memory Solutions

Computer Memory Solutions 16GB (2x8GB) DDR3L 1600 CL11 iMac 21.5 Late 2012

SKU CH-X445-7D5NA

A 16 GB DDR3L 1600 CL11 dual-channel kit built for the 21.5-inch Late 2012 iMac with Core i7 3.1 GHz

  • Total capacity16 GB (2 × 8 GB)
  • Rated speedDDR3L 1600 (PC3L 12800)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL11
  • Memory timings11-11-11
  • Rated voltage1.35 V
  • 16 GB kit upgrades iMac to 32 GB maximum
  • DDR3L 1600 MHz CL11 matches factory timing
  • 35 V low-voltage modules reduce power draw
  • 204-pin SO-DIMM form factor fits Late 2012 slot
  • Lifetime warranty from Computer Memory Solutions

Targeted iMac upgrade

This 16 GB kit contains two 8 GB DDR3L SO-DIMM modules built for the 21.5-inch iMac with a 3.1 GHz Core i7 from late 2012. It matches the factory 204-pin layout and runs at the standard 1.35 V used by that model.

Capacity and headroom

The pair fills two slots and brings the system to 16 GB, well below the 32 GB maximum the machine accepts across its four sockets. Everyday multitasking and creative applications run with comfortable headroom; workloads that exceed 16 GB will still page to storage.

Thermals, noise and power

Low-voltage DDR3L operation keeps power draw modest and produces no extra heat that the iMac's internal cooling cannot handle. With no heat spreaders and no moving parts, the modules add zero acoustic noise during normal use.

How it compares

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

Price $40.99
Cheaper than about 80% of the 21,161 comparable items (median $397.99).
Total capacity 16 GB (2 × 8 GB)
Lower than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $2.56 per GB
Cheaper than about 91% 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 nameCM10246412800SODRL
Total capacity16 GB (2 × 8 GB)
Product type204-Pin DDR3 SO-DIMM
Performance
Rated speedDDR3L 1600 (PC3L 12800)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL11
Memory timings11-11-11
ECC supportNo
Buffer typeUnbuffered
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage1.35 V
Compatibility
Compatible systemsApple Imac "Core I7 in 3.1 21.5 in (Late 2012)
In the box
Included items2 Memory RAM Sticks

Questions about this item

Will this 16GB DDR3L 1600 kit work with the original 4GB modules already in my Late 2012 iMac?

The iMac has four slots and supports up to 32GB total. You can keep the existing modules and add this 2x8GB kit for 24GB, or fill all four slots with two kits to reach the 32GB maximum.

How can I confirm the memory is running at 1600MHz with CL11 timing after installation?

Open About This Mac and click System Report. Under Memory the speed should read 1600MHz and the part number will show PC3-12800, confirming the CL11 11-11-11 timing is active.

Does the package include anything besides the two 8GB SO-DIMM sticks?

The box contains only the two 204-pin DDR3L 1.35V modules. No tools, screws or additional cables are supplied, and none are required for the iMac memory compartment.

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