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Two green DDR3 SODIMM modules with gold contacts side by side

OWC

OWC 8GB (2x4GB) DDR3 1066MHz CL7 SODIMM Kit OWC8566DDR3S8GP

SKU CH-Z1PC-3P7SZ MPN OWC8566DDR3S8GP

An 8 GB DDR3 1066 MHz CL7 SODIMM kit for 2008-2010 MacBook, MacBook Pro and Mac mini models

  • Total capacity8 GB (2 × 4 GB)
  • Rated speedDDR3 1066 (PC3 8500)
  • CAS latencyCL7
  • Buffer typeUnbuffered

Capacity 8GB (2 x 4GB)

  • 8GB kit doubles notebook capacity with two 4GB modules
  • DDR3 1066MHz CL7 timing keeps older Macs responsive
  • Unbuffered non-ECC design matches factory specifications exactly
  • 204-pin SO-DIMM form factor fits MacBook Pro 2008-2010 and Mac mini 2009+
  • Low 1.5V operation reduces heat in compact aluminium chassis

Targeted Mac Memory Upgrade

This 8 GB kit supplies two 4 GB DDR3 SO-DIMMs rated at 1066 MHz with CL7 latency. It is built for MacBook Pro models from 2008 through 2010, MacBook 13-inch unibody units, and Mac mini systems from 2009 onward. The modules are unbuffered and non-ECC, matching the original specification for these notebooks and small-form-factor desktops.

Standard SO-DIMM Build Quality

Each stick uses a 204-pin edge connector and operates at 1.5 V, fitting directly into the factory memory slots without adapters. The 340 mil board thickness and 4.8 by 6.8 inch dimensions follow the JEDEC SO-DIMM outline, so the modules seat securely in the tight compartments of the listed MacBooks and Mac mini. Gold-plated contacts resist oxidation over long service life.

Replaces Lower-Capacity Factory Modules

The kit upgrades machines that shipped with 2 GB or 4 GB of memory, doubling or quadrupling the available RAM for smoother multitasking and larger project files. The jump is most worthwhile when the system currently runs a single module or a mismatched pair, because matched 4 GB sticks enable dual-channel bandwidth. Systems already populated with 8 GB of matched DDR3 1066 will not see a capacity gain from this kit.

How it compares

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

Price $33.99
Cheaper than about 83% 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 $4.25 per GB
Cheaper than about 83% 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
Total capacity8 GB (2 × 4 GB)
Performance
Rated speedDDR3 1066 (PC3 8500)
Memory
CAS latencyCL7
ECC supportNo
Buffer typeUnbuffered
Size & build
Shipping weight0.02 kg
Package size3 × 3 × 3 mm

Other versions of this model

2 more in the same range

Questions about this item

What DDR3 standard and speed does this 204-pin SO-DIMM kit run at?

The kit operates at the DDR3-1066 standard, also labelled PC3-8500, with a CAS latency of CL7 and 1.5 V.

Which Mac models have the 204-pin slot this kit requires?

Compatible models include MacBook Pro 13-inch, 15-inch and 17-inch from 2008 to 2010, MacBook 13-inch Unibody 2009 to 2010, and Mac mini 2009 and later.

How are the two 4 GB modules installed, and what step is often missed?

Insert each module at an angle into the SO-DIMM slot until the gold contacts disappear, then press down firmly until both side clips click into the notches.

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