Dell Small Business offers its Dell Precision Tower 3420 Intel Kaby Lake Core i3 3.9GHz Small Form Factor Desktop PC for $649. Coupon code "SAVE50" cuts that to $599. With free shipping, that's $263 off list and the lowest price we could find, although we saw it for $50 less in July. It features an Intel Core i3-7100 3.9GHz Kaby Lake dual-core processor, 4GB RAM, 500GB 7200 rpm hard drive, and Windows 10 Pro 64-bit. Deal ends September 27.