Lenovo offers its 6.4-lb. Lenovo Z710 Intel Haswell Core i5 2.6GHz 17.3" 1080p Laptop in Black, model no. 59434383, for $649. Coupon code "USPZ78335" cuts it to $579. With free shipping, that's $20 under our January mention and the lowest total price we've seen for this model. It features an Intel Core i5-4210M Haswell 2.6GHz dual-core processor, 17.3" 1920x1080 LCD, 8GB RAM, 1TB hard drive, 802.11ac wireless, DVD burner, Bluetooth 4.0, 4-cell battery, and Windows 8.1 64-bit. Deal ends March 13.