Intel Motherboard BOXDP55SB Intel P55 LGA1156 FSB1600 DDR3 PCI Express 2x16 Audio microATX Retail Intel Core i7-800 processor series in an LGA1156 socket. Intel Core i5700 processor series in an LGA1156 socket. Number of Processors Supported: 1. Chipset Used: Intel P55 Express Chipset. Front Side Bus Supported: 1600 MHz.