Lenovo offers its 5.3-lb. Lenovo Z50 Intel Haswell Core i7 2GHz 15.6" LED-Backlit Laptop, model no. 59426425, for $639. Coupon code "D2BLENOVO3" cuts it to $619. With free shipping, that's $230 off list and the lowest total price we could find, although we saw it for $30 less last week. It features an Intel Core i7-4510U 2GHz Haswell dual-core processor, 1366x768 LED-backlit LCD, 4GB RAM, 500GB hard drive w/ 8GB SSD, 802.11ac dual-band wireless, DVD burner, Bluetooth 4.0, webcam, 4-cell battery, and Windows 8.1 64-bit. Deal ends September 3.