Well u can get the i7 3820 like the alienware has or a 3770k similar priced and performance, but lga 2011 (3820) will be like $250 for a decent board, where lga 1155 (3770k) is about $160, a msi 670gtx $380, Case of ur choice, Western digital black 2tb hdd, $200, $70 blu ray burner lg, $100 win 8, EVGA 750watt gold certified full modular psu $140.
lga 2011 motherboard would suggest a ASUS P9X79 LE, and lga 1155 a ASRock Z77 Extreme4/6
24gb of ram as quad channel or more? lga 2011 has 8 slots for ram where lga 1155 only has 4