Shipping now are the larger, more-powerful ZBook 15 and ZBook 17 mobile workstations. Aside from their 15.6- and 17.3-inch screen sizes, the two are mostly identical, except for ZBook 17's highest-end Intel Core i7-4930MX 3.0-GHz quad-core processor. The ZBook 15 tops out at the Intel Core i7-4900MQ 2.8-GHz quad-core chip. All processor options include Intel HD Graphics 4600, and both also can be configured with an Nvidia Quadro K610M with 1 GB dedicated video memory. The ZBook 15 will offer a 3,200-x-1,800 display; the 17 tops out at 1,920-x-1,080. The top ZBook 15 graphics option is Nvidia's K2100M with 2 GB dedicated video memory. On the ZBook 17, it's the K5100M with 8 GB. Both systems support 4k displays through DisplayPort 1.2. Storage options and pricing next.