Yup onboard video won't run sf4. It uses advanced shaders. You are going to need a pcie card with a lot of ram and a decent buss speed to run sf4.
Also I'm not entirely sure about the processors.... they should be fast enough, but the only thing I can get sf4 to run on well is my quad core.
I know you look at sf4 and think it's just a lousy fighting game, but it's actually a beast. They actually released a stripped down version as a benchmarking tool if that tells you anything.