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Four green DDR3 SODIMM sticks with black chips, 204 pins each

Timetec

Timetec 16GB (4x4GB) DDR3 1066MHz CL7 1.5V 204-Pin SODIMM iMac Late 2009

SKU CH-CWJ4-F99TH

16 GB DDR3 kit of four 4 GB SODIMMs at 1066 MHz CL7 for late 2009 iMac models

  • Total capacity16 GB (4 × 4 GB)
  • Rated speedDDR3 1066 (PC3 8500)
  • CAS latencyCL7
  • Rated voltage1.5 V
  • Buffer typeUnbuffered
  • Recommended forFor Apple system

Capacity 16GB (4 x 4GB)

  • 16GB kit boosts multitasking on Late 2009 iMacs
  • DDR3 1066MHz CL7 matches Apple factory spec
  • 5V unbuffered modules install without BIOS changes
  • Four 4GB SODIMMs fill every slot in 21.5 and 27-inch models
  • Strictly selected ICs tested for stability in Mac systems

Apple iMac Late 2009 memory kit

This 16 GB kit contains four 4 GB DDR3 SODIMM modules built for iMac models 10,1 and 11,1 released in late 2009. It targets owners who want to maximise the factory memory limit on these all-in-one desktops. The kit is sold new and ready to install.

204-pin unbuffered non-ECC modules

Each stick uses a standard 204-pin SO-DIMM edge connector and runs at 1.5 V without error correction or registered buffering. The dual-rank 2Rx8 organisation fits the iMac memory slots directly, so a simple screwdriver and the owner’s manual are all that is required for a plug-and-play upgrade at home.

CL7 latency at 1066 MHz

The modules operate at DDR3 1066 (PC3-8500) with a CAS latency of 7, delivering responsive multitasking performance within the iMac’s original thermal envelope. Standard-voltage DDR3 draws modest power and produces no additional fan noise compared with the factory-installed memory.

How it compares

Measured against everything we stock in Laptop RAM, at today’s prices. Recalculated every night.

Price $31.99
Cheaper than about 72% of the 2,079 comparable items (median $70.99).
Total capacity 16 GB (4 × 4 GB)
Typical for this category: the median of 1,886 items is 16 GB.
Price per GB $2.00 per GB
Cheaper than about 96% of the 1,886 comparable items (median $5.94 per GB).

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Specifications

Product
Brand nameTimetec
Model nameMM-G4GD310S7C
Total capacity16 GB (4 × 4 GB)
Product type204-Pin DDR3 SO-DIMM
Performance
Rated speedDDR3 1066 (PC3 8500)
Memory
CAS latencyCL7
ECC supportNo
Buffer typeUnbuffered
Power
Rated voltage1.5 V
Compatibility
Recommended forFor Apple system

Other versions of this model

5 more in the same range

Questions about this item

Does the DDR3 1066MHz PC3-8500 interface limit the iMac to 1066MHz operation?

Yes, the modules run at 1066MHz PC3-8500 and the iMac Late 2009 memory controller caps the bus at that speed.

Will the 204-pin SODIMM dimensions of 30mm height by 67.6mm length fit the iMac 10,1 and 11,1 slots?

The 30mm by 67.6mm 204-pin SODIMM form factor matches the iMac Late 2009 SO-DIMM slots exactly.

How are the four modules installed and what step do people often miss?

Remove the bottom access door with a screwdriver, insert each 4GB module until it clicks, then press the memory compartment cover back until it latches — skipping the latch leaves the RAM unseated.

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