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Two green circuit boards with gold edge connectors and black memory chips

Computer Memory Solutions

Computer Memory Solutions 8GB (2x4GB) DDR3 1066MHz CL7 SODIMM MacBook Pro 13" 2.26 2009

SKU CH-8J4V-M6AMD

A matched pair of 4 GB DDR3 1066 MHz SO-DIMM modules for upgrading a 13-inch MacBook Pro 2.26 GHz (Mid-2009) to 8 GB

  • Total capacity8 GB (2 × 4 GB)
  • Rated speedDDR3 1066 (PC3 8500)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL7
  • Memory timings7-7-7
  • Rated voltage1.5 V
  • 8GB kit doubles the 2009 MacBook Pro to its 8GB maximum
  • CL7 1066 MHz timing keeps the Core 2 Duo running at full bus speed
  • 204-pin DDR3 SO-DIMM form factor fits the factory memory slots exactly
  • Two matched 4GB modules enable dual-channel throughput on the 13-inch model
  • 5 V unbuffered design meets Apple’s original voltage spec without modification

MacBook Pro 13" 2009 memory upgrade

This 8 GB kit contains two 4 GB DDR3 SO-DIMM modules built for the Mid-2009 MacBook Pro 13-inch model MB990LL/A. It targets owners of that specific notebook who want to reach the machine's 8 GB ceiling. The sticks are unbuffered, non-ECC and run at 1.5 V.

Sustained load behaviour

CL7 timing at 1066 MHz gives low latency for everyday multitasking and older macOS workloads. Major-brand DRAM chips and the absence of a heat spreader keep the modules within the notebook's thermal envelope during extended use. Lifetime warranty from the manufacturer backs long-term reliability.

Deciding specification

The kit is validated only for the MacBook Pro "Core 2 Duo" 2.26 13" (SD/FW) running Snow Leopard 10.6 with Boot ROM MBP 51.007E.B05. Systems lacking that ROM version or a different model identifier will not recognise the full capacity.

How it compares

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

Price $35.99
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 $4.50 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 nameCM512648500SODRH
Total capacity8 GB (2 × 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 Macbook Pro "Core 2 Duo" 2.26 13 in (Sd/Fw) MB990Ll/A
In the box
Included items2 Memory RAM Sticks

Questions about this item

How much power does the 1.5 V DDR3 1066 MHz kit draw under continuous load?

The modules run at 1.5 V with no heat spreader, so they draw minimal power and stay cool during all-day use in the MacBook Pro 13".

Does this 204-pin SODIMM set need any extra parts or firmware before it works in the Mid-2009 MacBook Pro?

No extra parts are required; the MacBook Pro must run Mac OS X 10.6 Snow Leopard and have Boot ROM version MBP 51.007E.B05 installed for the full 8 GB to be recognised.

Will the CL7 1066 MHz sticks run stably alongside the original 2 GB or 4 GB modules that came with the 2.26 GHz Core 2 Duo?

The kit is designed as a matched 2 x 4 GB pair for the two slots; mixing with older modules is not recommended because the system maxes at 8 GB and timing mismatches can cause instability.

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