4GB Total. Two 2GB PC3-8500 204 pin SODIMM DDR3 1066MHz 1067MHz for Apple.

Warranty: Lifetime Replacement Warranty.

Premium Quality: Brand name parts only-no unknown and overclocked parts. All memory modules made from major brand memory chips such as Micron, Samsung, Elpida, Hynix, Promos, Infineon/Qimonda. We do not use generic or OEM chips that are unreliable.

 

Compatibility: Industry standard memory. Guaranteed 100% compatible.

 

Experience: Memory expert since 1990.

 

Exchanges and Returns: No hassle exchanges and refunds.

 

Shipping: Quick shipping. Shipped in well padded envelope or box with antistatic packing.

Compatible with DDR3 versions:

Apple  iMac 20-inch/24-inch (Early 2009) Core 2 Duo

Apple  iMac 21.5-inch (Late 2009) Core 2 Duo

Apple  iMac 27-inch (Late 2009) Core 2 Duo/i5/i7