By consolidating multiple power needs into one device, all-in-one power supplies reduce cable clutter, improve space utilization, and often incorporate energy-saving technologies. The AIO prioritizes order and simplicity over expansion and maximum power. Screen: FHD at 24”, better QHD/4K if you exceed that diagonal. If you're looking at all-in-one computers and wondering if they're worth it, here's a. An all-in-one PC (AIO) is precisely what the name implies: it combines all the necessary components of a computer, such as the motherboard, CPU, storage, and monitor, into a single device. Only the most basic peripherals, such as a mouse and keyboard, need to be attached to an AIO for full. The short answer for most people is “No, not usually,” but it depends on your specific setup. In general though, unless you are doing extreme overclocking, you don't typically need to connect both CPU power cables. These units can simultaneously power desktop computers, charge mobile devices like smartphones and tablets, and even support camera batteries or other. A non-modular PSU is attractive to me because I don't need to acquire additional cables. However, if fully modular PSUs come with the cables in the box but not attached that would sway my opinion.