Introducing power without the tower. The new HP Z1 is the world’s first all-in-one workstation featuring a 68,6 cm 27" diagonal display that snaps open to let you swap out parts and make upgrades. No tools required. Unleash your creativity with accelerated performance, 68,6 cm 27" LED-backlit display that supports over a billion colors, and HP’s world-class reliability. The HP Z1. Advanced design from A to Z.