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

Computer Memory Solutions

Computer Memory Solutions CM256648500SODRH 4GB (2x2GB) DDR3 1066MHz memory upgrade

SKU CH-191T-Q6EF7

4GB DDR3 1066MHz SO-DIMM kit with two 2GB modules for Apple MacBook Pro 13.3" Core 2 Duo 2.26GHz MC207LL/A

  • Total capacity4 GB (2 × 2 GB)
  • Rated speedDDR3 1066 (PC3 8500)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL7
  • Memory timings7-7-7
  • Rated voltage1.5 V
  • 4GB kit upgrades MacBook Pro 13.3" to maximum 8GB capacity
  • Dual 2GB modules enable dual-channel performance on two-slot systems
  • DDR3 1066MHz CL7 timing matches factory memory specifications exactly
  • 5V unbuffered non-ECC design ensures stable operation without errors
  • 204-pin SO-DIMM form factor fits Apple MC207LL/A slot perfectly

System-Specific DDR3 Kit

This 4 GB kit contains two 2 GB DDR3 SO-DIMM modules rated at 1066 MHz with CL7 timing. It is built for the Apple MacBook Pro 13.3" Intel Core 2 Duo 2.26 model MC207LL/A. The unbuffered, non-ECC design uses 1.5 V power and major-brand chips.

Verify Slot Count And Maximum

Confirm the notebook has two SO-DIMM sockets and supports 8 GB total memory before ordering. The existing modules must be removable and the system must accept PC3-8500 204-pin DDR3 at 1.5 V. Machines with soldered memory or a lower ceiling will not use this kit.

Drop-In Upgrade For Two Slots

The pair fills both sockets to reach the 8 GB ceiling, freeing the system from swapping and improving multitask response. No heat spreader is fitted, so standard low-profile clearance applies. Installation requires only a screwdriver and the standard MacBook memory door.

How it compares

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

Price $10.99
Cheaper than about 96% of the 21,161 comparable items (median $397.99).
Total capacity 4 GB (2 × 2 GB)
Lower than about 90% of the 20,941 comparable items (median 32 GB).
Price per GB $2.75 per GB
Cheaper than about 91% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameComputer Memory Solutions
Model nameCM256648500SODRH
Total capacity4 GB (2 × 2 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 13.3 in Intel Core 2 Duo 2.26 Mc207Ll/A
In the box
Included items2 Memory RAM Sticks

Questions about this item

What comes in the box and do I need anything else to install it?

The kit contains two 2GB DDR3 SODIMM sticks. Both slots in the MacBook Pro 13.3" are filled, so no extra modules are required.

Which capacity should I choose for this MacBook Pro 13.3" model?

This 4GB kit (2x2GB) matches the two-slot layout and is the correct upgrade for the MC207LL/A.

What does the 1066MHz rating mean once installed in the MacBook Pro?

The memory runs at DDR3 1066MHz (PC3-8500) with CL7 timing at 1.5V, the native speed supported by the Core 2 Duo 2.26GHz system.

More in Model-Specific Memory Upgrades

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