Let's take a look at seven computer power supplies and what changed from the first one, a Compaq AT power supply, through a modern EVGA supply.

Index:
0:00 Introduction
0:38 Compaq Prosignia 300W AT Power supply
2:39 Astec ATX145-3505 145W ATX Power Supply
4:04 Astec ATX202-3545 200W ATX Power Supply
5:04 Antec PP-303XP 300W ATX Switching Power Supply
6:43 Dynex DX-400WPS 400W ATX Power Supply
8:11 Antec TP3-650 TruePower Trio 650 W ATX Power Supply
9:34 Tagan TG480-U22 480W ATX Power Supply
12:09 EVGA 460 BP
80 Plus Bronze 460W ATX Power Supply