You need to know what kind of voltage all your computer parts work at. There's not really a general Watt power supply that you should look for.
any power supply with at least 175 watts
300 watts
Simply put, no it can't but getting a more powerful one then you need is a complete waste of money. (I'm thinking about watts)
123mb
Its usually written on a label on the outside of the power supply box. The number will specify Watts, i.e.150W for 150 Watts
If you have a laptop, it should say on the underside either on the batter cover, or on the battery itself. For a desktop computer, it might say on a sticker above the power socket. If not, you'll need to open up your computer and have a look on the PSU (Power Supply Unit). This is located adjacent to the power socket.
Funny phrasing - but I assume it is about adding a bigger power supply. Answer: power supply must be replaced with one of higher nominal wattage. No way to "add watts" otherwise.
Watts.
The Whirlpool MT4155SPQ 1.5 CuFt Countertop Microwave Oven supplies 1200 watts of power.
watts
Your question is rather confusing. Are you asking what the power requirement is for the supply to a d.c. motor? In which case, it depends entirely on the power rating of that motor, which can range from a few watts up to thousands of watts.
The most common wattage rating for a standard desktop PC power supply is typically around 500-600 watts. This is usually sufficient to power a typical PC with a mid-range CPU and GPU configuration.