NeweggFlash offers the factory-refurbished Lenovo ThinkCentre M90P Intel Core i5 3.1GHz Desktop PC for $169.99. This $20 mail-in rebate drops the price to $149.99. With free shipping, that's $16 under our mention of a similar M90P (which included only 2GB RAM) from September and the best deal we've seen for any Lenovo M90P. (It's also $50 under the lowest total price we could find for a similarly configured refurbished system.) It features an Intel Core i5 3.1GHz processor, 4GB RAM, 250GB hard drive, DVD reader, and Windows 7 Professional 64-bit. Deal ends April 12.

A 90-day warranty applies, but it's unclear who backs it.