With high definition digital entertainment gaining popularity, having an HTPC setup is almost becoming a standard nowadays. It is easy to purchase a pre-built system for recording and playback HD contents. TiVo and Apple TV are a couple of example. Users can even add a TV tuner card to an existing system to convert it to an HTPC setup. For many computer enthusiasts, building their own system tailored to their needs is half the fun. Choosing the right case, one which offers ample expansion slots and good cooling, is essential for any HTPC. Of course, if the system can run at near silence, that would be a great plus when you immerse yourself in that digital enjoyment.