Yes, both would work fine, for single cards.
Normally the specifications for cards, found on the vendor site or at the manufacturer's website, will list the power requirements. You also might want to become familiar with a free tool for evaluating the power needs of your entire system:http://www.extreme.outervision.com/psucalculatorlite.jsp
However that PSU is not considered very high quality and I would encourage you to replace it. Here is a recognized ranking list - note that yours shows up on the bottoem tier - Tier 5:http://www.eggxpert.com/forums/thread/323050.aspx