Newegg offers the refurbished HP Debranded Intel Haswell Core i7 3.5GHz Desktop PC (pictured), model no. TS-631-018-W8PRO, for $609.99 with free shipping. That's tied with our mention of a refurb from last week, $140 off, and the lowest total price we could find. Features include an Intel Core i7-4770K 3.5GHz Haswell quad-core processor, 8GB RAM, 2TB hard drive, Blu-ray drive, DVD burner, and Windows 8 Pro.

Also available is the refurbished HP Debranded Intel Haswell Core i7 3.7GHz Desktop PC, model no. TS-151-018-W8PRO, for $659.99 with free shipping. That's tied with our mention of a refurb from last week, $140 off, and another price low. Outside of the CPU — it instead includes an Intel Core i7-4820k 3.7GHz Haswell quad-core processor — it features the same specs as the above system.

A 90-day warranty applies to both models, but it is unclear who backs it.