Im having similar issues, using
AMD A6-3620 with AMD Radeon™ HD 6530D
12 Gig of RAM
Windows 7 64bit
Far from the best computer, but so far it runs whatever I want it to, even if usually on low-medium settings. Had no trouble with Titanfall, and a can you run it site in a different thread said I was fine for UT3. As it is, the fps is AWFUL, even with lowest settings (including resolution). That said, the Orca is hilarious atm, it twigs out lol.