Intel Skulltrail is the ultimate platform for the high-end users. It has two sockets that can house two Intel Core 2 Extreme processors, and four PCIe x16 slots with support for up to four graphics cards working together in either SLI or CrossFire. We will explore the latter in a future article, but until then we've compiled this preview for you. We've taken a closer look at Skulltrail and see what hides beneath the heatsinks and coolers.