how can I tell how much watts my computer power supply has?

Solution
There should be a label somewhere, normally on the top, sometimes on the side. If still in doubt, you can post a picture of the label (use imgur or postimages.org) here. If there's no label anywhere, it's time to start thinking of replacing the psu anyways, OEM units (for the most part) don't last long under gaming load stresses.

Karadjgne

Titan
Ambassador
There should be a label somewhere, normally on the top, sometimes on the side. If still in doubt, you can post a picture of the label (use imgur or postimages.org) here. If there's no label anywhere, it's time to start thinking of replacing the psu anyways, OEM units (for the most part) don't last long under gaming load stresses.
 
Solution