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Two green circuit boards with gold contacts and black chips

Computer Memory Solutions

Computer Memory Solutions 8GB (2x4GB) DDR3 1066MHz PC3-8500 CL7 204-Pin SODIMM MacBook Pro 13" 2.26 2009

SKU CH-MVTQ-S3VA7

An 8 GB kit of two 4 GB DDR3 1066 MHz SODIMM modules for the 13-inch MacBook Pro 2.26 GHz (Mid 2009)

  • 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 upgrades MacBook Pro 13" 2009 to full 8GB capacity
  • DDR3 1066MHz PC3-8500 CL7 matches factory memory specification
  • 204-pin SODIMM form factor fits both memory slots directly
  • 5V unbuffered non-ECC design ensures stable operation
  • Lifetime warranty from CMS guarantees long-term reliability

MacBook Pro 13" mid-2009 memory kit

This 8 GB kit contains two 4 GB DDR3 1066 MHz SO-DIMM modules built for the MacBook Pro "Core 2 Duo" 2.26 13-inch (Mid-2009). It matches the PC3-8500 specification and CL7 timing required by that model. The 204-pin unbuffered, non-ECC design installs directly into the two factory memory slots. Computer Memory Solutions validates compatibility for this exact system.

Upgrading from the factory 2 GB or 4 GB

The original MacBook Pro 13-inch (Mid-2009) shipped with 2 GB or 4 GB of 1066 MHz DDR3 memory. Replacing those modules with this 8 GB kit doubles or quadruples the addressable RAM, allowing the machine to run Mac OS X 10.6 Snow Leopard and later supported releases with more headroom for multitasking. The upgrade is worthwhile when the system feels constrained by the original capacity ceiling.

Owners of the A1278 MacBook Pro 5,5

This kit suits owners of the MacBook Pro 5,5 (model identifiers MB990LL/A and A1278) who need the maximum 8 GB supported by the logic board and Boot ROM MBP 51.007E. B05. Builders working on other MacBook generations, newer macOS versions that demand more memory, or systems requiring ECC or registered modules should look at different memory products.

How it compares

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

Price $40.99
Cheaper than about 80% 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 $5.12 per GB
Cheaper than about 75% 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 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)
In the box
Included items2 Memory RAM Sticks

Questions about this item

Will the 204-pin SODIMM modules fit the two memory slots in my MacBook Pro 13" from 2009?

Yes, each 4 GB stick uses the standard 204-pin DDR3 SO-DIMM form factor that matches the two slots in the MacBook Pro 13" 2.26 GHz Mid-2009 (model A1278).

What is the correct way to seat the modules so the Mac recognises the full 8 GB?

Insert each stick at an angle until the gold contacts disappear, then press down firmly until both side clips click; the machine must be running Mac OS X 10.6 Snow Leopard with Boot ROM MBP 51.007E.B05 to see all 8 GB.

Do these unbuffered non-ECC sticks need any firmware updates or battery-backed settings later on?

No firmware or PRAM resets are required after installation; the modules run at 1.5 V with CL7 timing and have no heat spreader, so they operate maintenance-free for the life of the system.

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