Dell OptiPlex 3020 Intel Haswell Core i5 3.2GHz Mini Tower Desktop PC for $619. Coupon code "J2JVJ3C51C06VB" drops it to $569. With free shipping, that's tied with our mention from a week ago and the lowest total price we could find. It features an Intel Core i5-4570 3.2GHz Haswell quad-core processor, 4GB RAM, 500GB hard drive, DVD burner, and Windows 7 Professional 64-bit (plus a Windows 8 Pro license).