Bulldozer is slower than the Phenom II in Single Threaded applications, and as said, PCSx2 is one of those. Even in the future...the Bulldozer would not be a good pick for PCSX2...it went for more cores and less performance per core.
So yeah, your processor is 3.1GHZ...not enough to get full speed in the most demanding games, but should be enough for both. A 4GHZ processor is enough for max speed in nearly all games.
Your processor isn't bad...but it's not great, either. AMD's CPU's aren't known for their OC ability, so for PCSX2, and gaming in general, it's not great. Bulldozer is roughly 15% slower per core than an Intel Sandy Bridge. Since this is single threaded...it ends up being a massive victory for Intel CPU's.
So sorry, while you'll be fine for most games, the most intensive ones are out of your reach with that CPU. Perhaps you should try buying an after-market cooler and seeing if you can hit 4GHZ?
Not trying to sound insulting, but why on earth did you pick up a Bulldozer chip, after the entire tech world, even AMD Fanboys, listed it as fail, while much faster Intel offerings were available in the same price range?
Core i5 2500K @ 4.5GHZ, 8GB RAM 1866MHZ, 1080 GTX Strix, 128GB Samsung 830 SSD + 1TB Samsung 850 Evo SSD + 2 1TB HDDs.) Windows 7 64-bit Professional