The Sun Fire X4150 is a "2U" workhorse squeezed into a 1U chassis. Sporting two quad-core Intel Xeon CPUs, up to 64GB of RAM, and eight internal 2.5-inch 10K SAS drives, it's a monster of a system, blazing through database and Web-serving benchmarks in the lab. Even the little details are there, such as internal USB 2.0 ports (in addition to two in the front and two in the rear), redundant power supplies, four built-in gigabit Ethernet ports, and more. Thin is definitely in with the X4150.

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