Most folks use 1155 sandy bridge cpus for new builds. The 2500K is the favorite, since the k line has an unlocked multiplier for overclocking. For chipsets, the z68 works well with onboard video or the p67 for a separate card. DDR3 is still cheap. Two 4 gb sticks are going for about $80 at newegg either with or without a rebate. 1600 is the most popular speed. Look for a board with usb 3.0 and sata 6 support. The 1366 boards are a little dated now, but the asus sabertooth is a good choice for 1366. I like gigabyte boards with the dual bios program to make flashing a little safer.