ANTOnline offers the Lenovo ThinkCentre M83 Intel Core i5 3.4GHz Desktop PC, model no. 10AM0002US, for $589.99 with free shipping. That's the lowest total price we could find by $69. It features an Intel Core i5-4670 3.4GHz quad-core processor, 4GB RAM, 1TB hard drive, DVD burner, Gigabit Ethernet, and Windows 7 Professional 64-bit with a Windows 8 upgrade license.