Adorama offers the HP Envy 700-215xt Intel Haswell Core i7 3.4GHz Desktop PC, model no. J6N59AV#ABA_1, for $659.99. An $80 mail-in rebate cuts the price to $579.99. With free shipping, that's $55 under our fall mention and $135 below the lowest total price we could find for a similar desktop. It features an Intel Haswell Core i7-4770 3.4GHz quad-core processor, 8GB RAM, 1TB 7200 rpm hard drive, DVD burner, NVIDIA GeForce GT 640 4GB graphics card, 802.11n wireless, Bluetooth, and Windows 7 Home Premium 64-bit. Rebate expires April 10.