Hardware.Info posted 4K Video Editing PC - February 2016
A quote from the article:
A few years ago, your PC just couldn't be fast enough for digital video processing. By now every average PC is able to process Standard Definition (PAL 720x576) as well as HD Ready, but technology doesn't stand still. By now just about every smartphone can record in HD or Full HD and the new frontier is Ultra HD, also known as 4K. This resolution and the 'accompanying' codec HEVC / H.265 require seriously powerful hardware.4K Video Editing PC - February 2016 @ Hardware.Info
That's the reason why a powerful PC can still really make a difference. You need a fast processor, lots of storage capacity, and good monitor able to display 4K resolutions.
4K digital video editing requires a hefty amount of processing power, and our video editing PC delivers that in spades. Often overlooked in off-the-shelf PCs is the power supply - a video editing PC will be running longer and more frequently at full load, which stresses the PSU quite a bit. We choose high-end components that will work fine for some years down the road, ensuring stable operation for the rig's entire lifetime.