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Two green DDR3 SO-DIMM sticks, no heat spreader

Computer Memory Solutions

Computer Memory Solutions 16GB DDR3 1333MHz 2x8GB SO-DIMM iMac Core i7 3.4 27-Inch Mid-2011

SKU CH-7WX6-D5CY7

16 GB kit of two 8 GB DDR3 1333 MHz SO-DIMM modules for the 27-inch Mid-2011 iMac Core i7 3.4

  • Total capacity16 GB (2 × 8 GB)
  • Rated speedDDR3 1333 (PC3 10600)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL9
  • Memory timings9-9-9
  • Rated voltage1.5 V
  • 16GB kit (2×8GB) upgrades the iMac to 32GB maximum
  • DDR3 1333MHz PC3-10600 matches the Mid-2011 iMac specification
  • CL9 1.5V unbuffered non-ECC SO-DIMM installs without voltage changes
  • 204-pin SODIMM form factor fits the four memory slots directly
  • CMS lifetime warranty covers the modules for as long as you own them

iMac Mid-2011 16 GB DDR3 kit

This 16 GB kit contains two 8 GB DDR3 SO-DIMM modules rated at 1333 MHz. It is built for the Apple iMac Core i7 3.4 27-inch model released in mid-2011. The memory is unbuffered, non-ECC and runs at 1.5 V. It provides a direct upgrade path for that specific all-in-one desktop.

204-pin SO-DIMM DDR3 1333 MHz

The decisive specification is the 204-pin DDR3 SO-DIMM form factor at 1333 MHz (PC3-10600). Only systems that accept this exact module type and speed will recognise the memory. The iMac Mid-2011 has four slots and supports a maximum of 32 GB, so this two-module kit leaves two sockets free for future expansion.

Low-profile modules without heat spreaders

These sticks have no heat spreader, keeping the profile low for the tight iMac socket spacing. At 1.5 V and CL9 latency, they draw standard DDR3 power and run silently with no active cooling. Normal operation stays within the thermal envelope designed for the original Apple memory configuration.

How it compares

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

Price $41.99
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 $2.62 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 nameCM10246410600SODRH
Total capacity16 GB (2 × 8 GB)
Product type204-Pin DDR3 SO-DIMM
Performance
Rated speedDDR3 1333 (PC3 10600)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL9
Memory timings9-9-9
ECC supportNo
Buffer typeUnbuffered
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage1.5 V
Compatibility
Compatible systemsApple Imac "Core I7 in 3.4 27 in (Mid-2011)
In the box
Included items2 Memory RAM Sticks

Questions about this item

Will the 1333 MHz rating run at that speed once installed in the 27-Inch Mid-2011 iMac?

The iMac's memory controller is specified for 1333 MHz DDR3, so the modules will operate at their rated 1333 MHz without downclocking.

What does the PC3-10600 designation tell me about the memory interface?

PC3-10600 is the JEDEC bandwidth label for DDR3-1333, confirming the 204-pin SO-DIMM interface and 1.5 V operating voltage used by this iMac.

Will the two 8 GB sticks fit the four SO-DIMM slots inside the 27-Inch Mid-2011 iMac?

Yes, the 204-pin SO-DIMM form factor matches the iMac's four memory slots, leaving two slots free for future expansion up to the 32 GB maximum.

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