The 13.3-inch Zenbook UX305 has a 1080p matte-coated IPS display, and features an Intel Core M processor with Intel HD Graphics 5300. Being built around Intel's Core M-5Y10 doesn't necessarily mean you can expect super high performance. The Core M was built for ultra-thin, fanless, mobile form factors, meaning a decent amount of performance (800 MHz to 2.0 GHz max) is instilled in this thin design while keeping power consumption intact (Slash Gear).
Surely, the ASUS ZenbookUX305 Ultrabook isn't trying to be the leader in powerful performance. But hey, it's mobile, it's good for completing everyday tasks for long hours. Starting at $699, isn't too pricey either. In fact, that's a good $200 less than the leading Apple ultra-thin laptops, while boasting more storage capacity! According to Engadget, it seems to be a relatively good equivalent to highly popular (and pricey) PC notebooks. All-in-all, you've at least got a smart option for value with the Zenbook UX305.