ANTOnline offers the Lenovo ThinkCentre M83 Intel Core i7 Quad 3.4GHz Desktop PC, model no. 10AM000AUS, for $679 with free shipping. That's $31 below our mention from a week ago and the lowest total price we've seen for this desktop. (It's a current low by $20.) It features an Intel Core i7-4770 3.4GHz quad-core processor, 4GB RAM, 1TB hard drive, DVD burner, Gigabit Ethernet, and Windows 7 Professional 64-bit.