ORIGINAL APPLE
COMPATIBILITY:
iMac 27"
Model: A1312
Year: 2009 TO 2011
  ; YEAR: 2009- 3.06 GHz Core 2 Duo (E7600)
- Cores: Dual-Core ( 2)
- Socket Type: LGA 775 (Socket T)
- EFI Architecture: 64-Bit
YEAR: 2009- 3.33 GHz Core 2 Duo ( E8600)
- Cores: Dual-Core (2)
- Socket Type: LGA 775 (Socket T)
- EFI Architecture: 64-Bit
; YEAR: 2009 - 2.66 GHz Core i5 (i5-750)
- Cores: Quad-Core (4)
- Socket Type: LGA 1156 (Socket H)
- EFI Architecture: 64-Bit
YEAR: 2009-2.8GHz Core i7 (i7-860)
- Cores: Quad-Core (4)
- Socket Type: LGA 1156 (Socket H)
- EFI Architecture: 64-Bit
YEAR: 2010 - 3.2 GHz Core i3 (i3-550)
- Cores: Dual-Core (2)
- Socket Type: LGA 1156 (Socket H)
- EFI Architecture: 64-Bit
YEAR: 2010 - 2.8 GHz Core i5 (i5-760)
- Cores: Quad-Core (4)
- Socket Type: LGA 1156 (Socket H)
- EFI Architecture: 64-Bit
YEAR: 2010 - 3.6 GHz Core i5 (i5-680)
- Cores: Dual-Core (2)
- Socket Type: LGA 1156 (Socket H)
- EFI Architecture: 64-Bit
YEAR: 2010 - 2.93 GHz Core i7 (i7-870)
- Cores: Quad-Core (4)
- Socket Type: LGA 1156 (Socket H)
- EFI Architecture: 64-Bit
YEAR: 2011 - 2.7 GHz Core i5 (i5-2500S)
- Cores: Quad-Core (4)
- Socket Type: ;LGA 1155 (Socket H2)
- EFI Architecture: 64-Bit
YEAR: 2011 - 3.1 GHz Core i5 (i5-2400)
- Cores: Quad-Core (4)
- Socket Type: LGA 1155 ;(Socket H2)
- EFI Architecture: 64-Bit
YEAR: 2011 - 3.4 GHz Core i7 (i7-2600)
- Cores: Quad-Core (4)
- Socket Type: LGA 1155 ;(Socket H2)
- EFI Architecture: 64-Bit
  ;