The P45 Express (codenamed Eaglelake) is a mainstream desktop computer chipset from Intel released in Q2 2008. The first mainboards featuring the P45 chipset were shown at CeBIT 2008.^[4][5][6][7]

The P45 Express chipset supports Intel's LGA 775 socket and Core 2 Duo and Quad processors. It is a 65 nm chipset, compared to the earlier generation chipsets (P35, X38, X48) which were 90 nm.^[8]

• 1333/1066/800 MT/s front-side bus (FSB), most motherboard manufacturers claim support up to 1600 MT/s.
• PCI Express 2.0, 1 ×16 or 2 ×8 in CrossFire configuration.
• Dual-channel DDR2 memory
  • up to 16 GiB addressable memory; officially up to 800 MHz, most motherboard manufacturers claim support up to 1200 MHz
• Dual-channel DDR3 memory
  • up to 8 GiB addressable memory; officially up 1066 MHz, most motherboard manufacturers claim support up to 1333 MHz
• ICH10 / ICH10R southbridge
• Supports 45 nm processors

• List of Intel chipsets