Surplus Products via Newegg offers the refurbished HP Z420 Intel Xeon E5 3.2GHz Workstation Desktop PC for $349.99 with free shipping. That's tied with our mention from a month ago, $150 off, and the lowest total price we've seen for this configuration. (For further comparison, most stores charge over $300 for the processor in this system alone.) It features an Intel Xeon E5-1650 3.2GHz Sandy Bridge 6-core processor, 8GB RAM, 250GB hard drive, DVD burner, Gigabit Ethernet, and Windows 10 Professional 64-bit.
Note: A 90-day Surplus Products warranty applies. The item may have cosmetic blemishes such as scratches or surface imperfections.