Dell Small Business offers its Dell Vostro 3900 Intel Haswell Core i5 Quad 3.2GHz Desktop PC (no monitor) for $479. Coupon code "VOSTRODEAL" cuts the price to $404. With free shipping, that's $45 under our mention from two weeks ago, $423 off, and the lowest total price we've seen for the Vostro desktop with a Core i5 quad-core CPU. 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, and Windows 7 Professional 64-bit with a Windows 8.1 Pro license. Deal ends March 31.