TigerDirect offers the AMD Phenom II X6 1045T 2.7GHz AM3 6-Core Barebones PC Kit for $304.99. These $20, $20, $15, $10, and $10 mail-in rebates cut it to $229.99. With $10.40 for shipping, that's $119 under the lowest total price we could find for similar items if purchased separately elsewhere. It features an AMD Phenom II X6 1045T 2.7GHz AM3 6-core processor, model no. HDT45TWFGRBOX, Gigabyte 760G AM3 MicroATX Motherboard, model no. GA-78LMT-USB3, Corsair XMS3 8GB DDR3 RAM with two 4GB DIMMs, model no. CMX4GX3M1A1333C9, MSI Radeon HD 5450 1GB video card, model no. R5450-MD1GD3H/LP, Ultra Gladiator ATX mid-tower case, and HEC Orion 585-watt power supply. Deal ends February 9.
Update: Shipping has increased slightly to $10.68.