Dell Small Business offers its Dell Vostro 3900 Intel Haswell Core i5 Quad 3.2GHz Mini Tower Desktop PC (no monitor) for $549. Coupon code "VOSTRODEAL" cuts it to $449. With free shipping, that's tied with our mention from three weeks ago as the lowest total price we've seen for this configuration. (It's also the best deal now by $120, although most sellers charge over $600.) It features an Intel Core i5-4460 3.2GHz Haswell quad-core processor, 8GB RAM, 1TB 7200 rpm hard drive, DVD burner, Nvidia GeForce GTX 745 4GB video card, USB 3.0, HDMI, gigabit Ethernet, and Windows 7 Professional 64-bit with Windows 8.1 Pro license. Deal ends April 30.