Corsair Obsidian 450D review: Corsair strikes again
 

So which features do you have to miss from it's bigger brothers? Like we mentioned you get two USB ports less and you only get one hard drive cage instead of two. The 450D should however have plenty of disk mounting options for most users and many people will have removed the second cage should their case come with it. Apart from that there's the obvious reduction in internal room, you can't fit an E-ATX or XL-ATX motherboard inside the 450D. But let's be honest, if you need the extra room you can opt for the Corsair 750D instead.

http://uk.hardware.info/reviews/5310...-strikes-again