Dell Small Business offers the Dell OptiPlex 9020 Intel Haswell Core i5 3GHz Small Form Factor Desktop PC (no monitor) for $679. Coupon code "BONUS100" cuts it to $579. With free shipping, that's $647 off and the best price we could find. It features an Intel Core i5-4590 3GHz Haswell quad-core processor, 8GB RAM, 500GB 7200 rpm hard drive, AMD Radeon R5 240 1GB graphics card, DVD player, USB 3.0, and Windows 7 Professional 64-bit with a Windows 10 Pro license. Deal ends September 28.