I would just use CPU-Z, its a much better and more accurate way to determine what your PC specs are if you arent sure of the parts inside it. Regardless, you should just get Dolphin and try out the game.
http://www.cpuid.com/
Or someone with knowledge could just tell you that this is a pretty decent quad core CPU that will do the job just fine. I had one of those 6 or 7 years ago and never had any problems using Dolphin back then... you know, when Dolphin still had lots of potential for optimization.
The rest is up to your GPU. You should be fine with it, but it might be worth it to upgrade that part of your PC, if you care about HD resolution.
Last edited by Axido,