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Two green 204-pin DDR3 SO-DIMM sticks, no heat spreader

Computer Memory Solutions

Computer Memory Solutions 8GB (2x4GB) DDR3 1333MHz CL7 SODIMM for Apple iMac Core i7 2.8 21.5-Inch Mid-2011

SKU CH-DKYW-Q8VHT

8GB dual-channel DDR3 1333MHz CL7 SODIMM kit built for the 21.5-inch Mid-2011 iMac Core i7 2.8

  • Total capacity8 GB (2 × 4 GB)
  • Rated speedDDR3 1333 (PC3 10600)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL7
  • Memory timings7-7-7
  • Rated voltage1.5 V
  • 8 GB kit upgrades the iMac to 32 GB maximum
  • CL7 timing at 1333 MHz speeds up everyday tasks
  • 204-pin SODIMM fits the Mid-2011 21.5-inch iMac exactly
  • Two matched 4 GB modules enable dual-channel operation
  • Major-brand chips from Micron, Samsung or Elpida ensure reliability

Apple iMac Mid-2011 Memory Kit

This kit supplies two 4 GB DDR3 SO-DIMM modules for a total of 8 GB. The sticks run at 1333 MHz with CL7 timing and 1.5 V unbuffered operation. They are built to match the Apple iMac Core i7 2.8 21.5-Inch Mid-2011 specification. Each module uses a 204-pin layout and major-brand chipsets.

Ideal for iMac 2011 Upgrades

Owners of the named iMac model can install both sticks to reach 8 GB without compatibility guesswork. Buyers who need more than 8 GB or who are repairing a different computer should look elsewhere. The kit does not support ECC or registered memory configurations.

DDR3 1333 CL7 Specification

The decisive figure is the DDR3 1333 CL7 rating at 1.5 V in a 204-pin SO-DIMM form factor. If the target system requires a different speed, voltage or pin count, these modules will not function. Verified compatibility is limited to the listed iMac.

How it compares

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

Price $36.99
Cheaper than about 82% 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 $4.62 per GB
Cheaper than about 81% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameComputer Memory Solutions
Model nameCM5126410600SODRH
Total capacity8 GB (2 × 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 i7 in 2.8 21.5 in (Mid-2011)
In the box
Included items2 Memory RAM Sticks

Questions about this item

Should I pick the 2×4 GB kit or a single 8 GB module for this iMac?

The kit provides two 4 GB sticks, letting you fill two of the four slots and leave room for future expansion up to 32 GB total.

Will the CL7 timing at 1333 MHz actually run at that speed in the Mid-2011 iMac?

The modules are rated DDR3-1333 CL7, and the iMac's memory controller supports that speed, so they will operate at the rated frequency and latency.

Does the 204-pin DDR3 SO-DIMM interface limit the maximum capacity I can install?

The iMac has four SO-DIMM sockets and a 32 GB maximum, so this 8 GB kit uses half the slots and stays within the supported limit.

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