Antec's new Signature S10 is a big, tall, imposing E-ATX case with a number of interesting features. In a radical departure from the norm the chassis is organised as three chambers. The lower chamber contains the power supply and five 2.5-inch drive bays and is separated from the main chamber where you house the motherboard, CPU, graphics cards and cooling. That's not so unusual in a world where enthusiast cases often come with a power supply cover that performs a similar function.