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Four green DDR3 SODIMM modules with black chips, 204-pin form factor, no heat spreader

Computer Memory Solutions

Computer Memory Solutions 16GB (4x4GB) DDR3 1066MHz CL7 SODIMM for iMac 27-Inch Late 2009

SKU CH-SRZJ-W7NCE

Four 4 GB DDR3 SODIMM modules totalling 16 GB at 1066 MHz CL7 for the 27-inch iMac from late 2009

  • Total capacity16 GB (4 × 4 GB)
  • Rated speedDDR3 1066 (PC3 8500)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL7
  • Memory timings7-7-7
  • Rated voltage1.5 V
  • 16GB total capacity across four matched modules
  • DDR3 1066MHz CL7 timing for responsive operation
  • 204-pin SO-DIMM form factor fits the iMac slots
  • 5V unbuffered non-ECC design matches original spec
  • Guaranteed compatible with 27-Inch Late 2009 iMac

Kit Specifications

This 16GB kit contains four 4GB DDR3 SODIMM modules rated at 1066MHz with CL7 timings. Each stick uses a 204-pin layout and operates at 1.5V without ECC or buffering. The set is built to match the factory slot count of the target iMac.

Intended Use

The memory is validated for the Apple iMac "Core 2 Duo" 3.06 27-Inch Late 2009 (model identifiers MB952LL/A, iMac10,1, A1312). Owners of that exact machine can install all four modules to reach the 16GB maximum. Systems with a different model year, a different screen size, or a requirement for a later DDR generation will not accept this kit.

Deciding Specification

The decisive figure is the DDR3 1066MHz (PC3-8500) CL7 204-pin SODIMM form factor combined with the specific Late 2009 27-Inch iMac compatibility. If your Mac matches that exact model, the kit fits; otherwise the modules are physically or electrically incompatible.

How it compares

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

Price $74.99
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 $4.69 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 nameCM512648500SODRH
Total capacity16 GB (4 × 4 GB)
Product type204-Pin DDR3 SO-DIMM
Performance
Rated speedDDR3 1066 (PC3 8500)
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 2 Duo" 3.06 27 in Late 2009
In the box
Included items4 Memory RAM Sticks

Questions about this item

How much total memory does the 16GB kit give my iMac once all four slots are filled?

The kit provides exactly 16GB when all four 4GB modules are installed in the four available slots.

What speed will the DDR3 1066MHz modules actually run at in this iMac?

They operate at 1066MHz (PC3-8500), the native speed supported by the Late 2009 27-inch iMac.

Will these 204-pin SODIMM sticks fit the memory slots in my 27-inch Late 2009 iMac?

Yes, the 204-pin DDR3 SO-DIMM form factor matches the four slots in the 27-inch Late 2009 iMac.

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