It's tricky to find a small-form-factor PC that hits all the right notes. You can get easily expandable systems, but are they good-looking and as fast as a regular desktop? Digital Storm, at least, thinks it has everything nailed down. Its latest Bolt model, the Bolt X, promises to pair brisk performance with a slick design and easy expansion. To no one's surprise, the case is the big deal here. In addition to sporting a considerably cleaner look, it has both a vented base and top-mounted fans to improve the cooling. You can run overclocked processors and the "fastest" graphics cards in the Bolt X without cooking the insides, then. Digital Storm also vows painless upgrades through a "simplified" layout that lets you slot in fresh parts, including multiple storage drives.