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Four green DDR3 SODIMM sticks with black chips, no heat spreader

Computer Memory Solutions

Computer Memory Solutions 32GB (4x8GB) DDR3 1333MHz SODIMM for iMac 21.5 2.7 Mid-2011

SKU CH-1190-E528V

A 32GB kit of four 8GB DDR3 1333MHz SO-DIMM modules for upgrading a 21.5-inch iMac from Mid-2011

  • Total capacity32 GB (4 × 8 GB)
  • Rated speedDDR3 1333 (PC3 10600)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL9
  • Memory timings9-9-9
  • Rated voltage1.5 V
  • 32 GB total capacity from four 8 GB modules
  • 1333 MHz DDR3 speed rated at PC3-10600
  • 204-pin SODIMM form factor fits the iMac 21.5-inch Mid-2011
  • Non-ECC unbuffered design with CL9 9-9-9 timing
  • 5 V operation matches original Apple specification

32GB DDR3 kit for 2011 iMac 21.5

This 32GB kit contains four 8GB DDR3 1333MHz SO-DIMM modules built for the Apple iMac "Core i5" 2.7 21.5-Inch (Mid-2011). It uses 204-pin unbuffered non-ECC memory running at 1.5V with CL9 9-9-9 timing. The kit fills all four memory slots to reach the system maximum of 32GB.

Who this suits and who it does not

Owners of the specified Mid-2011 21.5-inch iMac model who want the full 32GB capacity will use every slot. Buyers with a different iMac year, screen size or processor should verify their exact model identifier first. This kit is not for systems that require ECC, registered modules or a different DDR generation.

204-pin DDR3 1333MHz non-ECC SO-DIMM

The modules are 204-pin DDR3 SO-DIMMs rated at 1333MHz (PC3-10600) with CL9 latency and 1.5V operation. They are unbuffered, non-ECC and dual-rank 2Rx8. This exact specification decides whether the memory will install and run in the target iMac.

How it compares

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

Price $91.99
Cheaper than about 69% of the 21,161 comparable items (median $397.99).
Total capacity 32 GB (4 × 8 GB)
Typical for this category: the median of 20,941 items is 32 GB.
Price per GB $2.87 per GB
Cheaper than about 90% 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 capacity32 GB (4 × 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 I5 in 2.7 21.5 in (Mid-2011)
In the box
Included items4 Memory RAM Sticks

Questions about this item

Will the 204-pin DDR3 SODIMM modules need any firmware updates or re-seating after installation?

The modules are unbuffered, non-ECC CL9 DDR3-1333 sticks rated at 1.5V; they require no firmware and no periodic re-seating once seated in the iMac's four SO-DIMM slots.

What limit appears first when the iMac runs all four slots at 1333 MHz continuously?

The memory controller in the Mid-2011 21.5-inch iMac is specified for a maximum of 32 GB across its four sockets, so total capacity is the first hard ceiling.

How much extra heat or fan noise do the four 1.5 V sticks add during all-day workloads?

Each stick draws standard DDR3 1.5 V power without a heat spreader; the iMac's existing thermal design handles the combined load without audible fan-speed increase.

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