Well I found this site called SystemRequirementsLab, I think its really great. I've used it to test about a few games before I bought it. Also it helped me figure out that my video card is total crap and can't play any good games... but back on topic,
What does it do
This site provides a One-Click solution that looks at your computer's hardware and system software to determine whether or not your current system can run a product. Each of your computer's components is evaluated to see how well it meets the minimum and recommended requirements for specific products. Recommendations are made on how to update or upgrade each component which does not meet the listed requirements. Sometimes, a simple, free software download is all that is needed. Sometimes you'll find that you need a different video card to fully experience what the game has to offer.
Pros
-Get your complete report in seconds including upgrade suggestions for your computer.
-Only your system's hardware and system software are evaluated.
-No personally identifiable information is collected.
-Works on Windows XP, 2000, 2003, Vista and 7.
-Works with Internet Explorer, Firefox and Netscape browsers.
-You will need to give your permission to download a secure ActiveX/Java browser component.
-You can easily uninstall the ActiveX/Java browser component when the analysis is complete
-Scan is free and only takes seconds
Cons (I found)
-Doesn't work with MACS
-Only games that are paid for (not free) are on that list.
-List is not frequently updated
LINKCan You Run It
Credits:Markgb1
Hope this helps you ^^