Child wants to fit an upgraded video card to his PC, and the card requires 400w power supply, with 500w recommended. Current power supply is a modest 300w. Replacements seem readily available, but how do I know what is required, to physically fit?
Have seen ATX style, but I haven't a clue what type of case he has, other than it is a tower. How can I tell? Presumably the wrong one will be a disaster. The holes for mains plug and fan must line up, as must fixing screws. Are cables all the same?
Thanks!