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Pair of green DDR3 memory modules with gold contacts

Simmtec, Inc

Simmtec, Inc 8GB 2x4GB DDR3 1066 PC3-8500 MacBook Pro 17 MC226LL/A Memory Upgrade

SKU CH-289E-PKW4V

8GB DDR3 1066 kit in two 4GB modules for the 17-inch MacBook Pro MC226LL/A

  • Capacity8GB (2 x 4GB)
  • SpeedDDR3 1066 (PC3 8500)
  • 8 GB capacity doubles multitasking headroom for demanding workloads
  • Dual-channel 2 x 4 GB kit maximises memory bandwidth on supported MacBook Pro 17 models
  • DDR3 1066 MHz (PC3-8500) matches factory speed for stable operation
  • System-specific design fits the MC226LL/A configuration without modification
  • 25 years component experience backs reliable module quality

Simmtec 8 GB DDR3 1066 kit

This Simmtec 8 GB kit contains two 4 GB DDR3 modules rated at 1066 MHz (PC3-8500). It is built as a system-specific upgrade for the 17-inch MacBook Pro identified by MC226LL/A. The memory arrives new from a supplier with 25 years of component experience.

For owners of the MC226LL/A MacBook Pro 17

This kit suits owners of the MC226LL/A 17-inch MacBook Pro who need an 8 GB DDR3 1066 upgrade. It is not for machines that take a different DDR3 speed grade or a different form factor. Buyers with other Mac models or non-Mac systems should verify their exact memory requirements first.

8 GB 2×4 GB DDR3 1066 specification

The decisive specification is the 8 GB capacity delivered as two 4 GB DDR3 1066 (PC3-8500) modules. Matching this exact capacity, module count, speed and form factor determines whether the upgrade will work in the target MacBook Pro.

Highlights

  • 8 GB capacity doubles multitasking headroom for demanding workloads
  • Dual-channel 2 x 4 GB kit maximises memory bandwidth on supported MacBook Pro 17 models
  • DDR3 1066 MHz (PC3-8500) matches factory speed for stable operation
  • System-specific design fits the MC226LL/A configuration without modification
  • 25 years component experience backs reliable module quality

Specifications

Capacity8GB (2 x 4GB)
SpeedDDR3 1066 (PC3 8500)

Questions about this item

Does my MacBook Pro 17 MC226LL/A need any specific firmware revision before installing this DDR3 1066 PC3-8500 memory?

The modules are built to the DDR3 1066 PC3-8500 specification that matches the MacBook Pro 17 MC226LL/A design, so no extra firmware step is required beyond the standard macOS updates Apple provides for that model.

Will this 2 x 4 GB DDR3 1066 kit run reliably if I keep the original 2 GB sticks installed alongside it?

Mixing capacities and speeds can prevent the MacBook Pro 17 MC226LL/A from booting or force it to run at the slowest module rate, so the manufacturer recommends populating both slots with this matched 8 GB kit and removing the old memory.

How can I confirm the new 8 GB DDR3 1066 kit is recognised at the correct speed after installation?

Open About This Mac or System Report and verify that Total Memory shows 8 GB and the Memory slot entries list DDR3 at 1066 MHz (PC3-8500) for each installed module.

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