Moofi (Woot's secret site) offers the factory-refurbished HP Pavilion Elite HPE H8-1234 AMD 6-Core 3.5GHz Desktop PC
(no monitor), model no. H2L72AA, for $449.99
for shipping. That's $20 under our September refurb mention and $65 under the lowest total price we could find for one today. It features an AMD FX-6120 3.5GHz 6-core processor, 10GB RAM, 1TB 7200 rpm hard drive, DVD burner, AMD Radeon HD 7450 1GB graphics card, 802.11n wireless, Bluetooth 3.0, Gigabit Ethernet, media card reader, and Windows 7 Home Premium 64-bit. A 90-day HP warranty applies. Deal ends today.
Update: Specs corrected.