Dell Small Business offers its Dell Vostro 3900 Intel Haswell Core i5 Quad 3.2GHz Desktop PC (no monitor) for $479. Coupon codes "379VOSTRO" and "VOSTRODEAL" cut it to $349. With free shipping, that's a $30 drop from two days ago and the lowest total price we've seen for this configuration. (It's also the best deal now by $143.) It features an Intel Core i5-4460 3.2GHz Haswell quad-core processor, 4GB RAM, 500GB 7200 rpm hard drive, DVD burner, media card reader, HDMI, two USB 3.0 ports, and Windows 7 Professional 64-bit with a Windows 10 Pro license. Deal ends June 10.