Dell Small Business offers the Dell OptiPlex 3020 Intel Haswell Core i5 3.2GHz Mini Tower Desktop PC (no monitor) for $639. Coupon code "R0JG96ZQ0F8BCL" cuts the price to $589. With free shipping, that's tied with our mention from two weeks ago as $381 off list and the lowest total price we could find. It features an Intel Core i5-4570 3.2GHz Haswell quad-core processor, 4GB RAM, 500GB 7200 rpm hard drive, DVD burner, and Windows 7 Professional 64-bit (plus a Windows 8 Pro license). Deal ends September 21.