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Four green SO-DIMM memory modules in anti-static bag

Computer Memory Solutions

Computer Memory Solutions 16GB (4x4GB) DDR3 1333MHz CL7 1.5V SO-DIMM Kit

SKU CH-DJRS-GWDD6

Four 4 GB DDR3 1333 MHz CL7 SO-DIMM modules for the late 2011 21.5-inch iMac

  • 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 total capacity for iMac Late 2011 upgrades
  • DDR3 1333MHz CL7 timing for responsive performance
  • 204-pin SO-DIMM form factor fits Apple iMac slots
  • 5V unbuffered non-ECC modules match system requirements
  • Four 4GB sticks fill all available memory sockets

16GB DDR3 SO-DIMM kit for 2011 iMac

This 16GB kit contains four 4GB DDR3 1333MHz CL7 SO-DIMM modules built for the Apple iMac "Core i3" 3.1 21.5-Inch (Late 2011). The unbuffered, non-ECC memory runs at 1.5V and uses 204-pin DDR3 SO-DIMM form factor to fill all four available slots.

Replaces lower-capacity DDR3 modules when 16GB is

The iMac12,1 platform caps total memory at 16GB across four sockets, so this kit is the maximum upgrade path. It is worth installing when the machine currently runs less than 16GB and the workload benefits from the full addressable space, such as larger datasets or heavier multitasking within the OS version the hardware supports.

Sustained operation at CL7 1.5V without heat

The modules operate at CL7 7-7-7 timings and 1.5V continuously. Because they lack heat spreaders, airflow inside the iMac chassis determines thermal behaviour during prolonged use; the memory will maintain rated speed as long as the system cooling keeps component temperatures within DDR3 limits.

How it compares

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

Price $75.99
Cheaper than about 71% 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 $4.75 per GB
Cheaper than about 80% 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 "Core I3 in 3.1 21.5 in (Late 2011)
In the box
Included items4 Memory RAM Sticks

Questions about this item

Does the 204-pin SO-DIMM form factor match the memory slots in the Late 2011 21.5-inch iMac?

Yes, the kit uses 204-pin DDR3 SO-DIMMs which are the correct module type for the iMac "Core i3" 3.1 21.5-Inch (Late 2011) that has four SO-DIMM slots.

Do I need to install all four 4GB modules at once, or can I add them one at a time?

The iMac has four slots and supports a maximum of 16GB; you can install the modules one at a time, but the full 16GB capacity is only reached when all four 4GB sticks are populated.

Will the 1.5V operating voltage require any future adjustment or replacement?

No, the modules run at the standard 1.5V for DDR3 and have no heat spreader or moving parts, so no voltage adjustments or component replacements are needed during their service life.

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