Intel® Core i7-3770K, 4x 3500 MHz
ASUS P8B75-M, 1155, Intel® B75 Chipsatz
16384 MB DDR3-RAM
1000 GB, Seagate®/Western Digital®, SATA
500 GB, Seagate®/Western Digital®, SATA
NVIDIA GeForce GTX 570, 1280 MB GDDR5, 2x DVI
350 Watt Silent-Netzteil
onBoard HD Audio 7.1
24x ASUS Multiformat DVD-Brenner
Look at eXtreme Power Supply Calculator Pro v2.5 and get the Pro version. Put your system load at 100% and capacitor aging at 30%, then add some safety margin to the calculated wattage and calculate that you will add some extra disks, fans, etc. in the future.
In addition to what Bill and Harm stated, ditch the B75 motherboard for a Z77 motherboard: The B75 chipset does not allow the CPU to be overclocked at all, which almost completely negates the very advantage of a K-series CPU with unlocked multipliers. In fact, all motherboards using the B75 chipset has all of the CPU speeds permanently locked to stock speeds.
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