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cpu: i5 2500k
cpu cooler: cooler master hyper 212
hdd: samsung spinpoint f3 1TB (you can re-use your old one though if you dont want a new hd)
gpu: if it fits in the 1k: gtx 570, if not: gtx 560 ti from Gigabyte, MSI or Asus
motherboard: asus p8p67 (rev 3.0) LGA 1155
case: coolermaster haf 912
ram: 2 x 2gb or 2x 4gb of gskill, corsair or patriot. 1600 mhz, timings: 9-9-9-24, voltage: 1.5v
psu: CORSAIR Enthusiast Series TX650 V2 650W