Horrible FPS

[lumpman2]

I don't know why, but every single time I play FTB Ultimate I never go above 10 fps (stays around 7-9.) I am playing on a server with one other person, but I get worse (about 3-5) fps in singleplayer. I have installed Optifine and my settings are:
Render: Normal
Graphics: Fast
Fast Advanced OpenGL

I've tried lowering all the vanilla settings and playing around with Optifine settings, but nothing seems to make it much better.
Windows 7
2GB RAM
Dual-Core Intel Processor

 

[Ashzification]

Check this out: http://desk.feed-the-beast.com/index.php?/Knowledgebase/Article/View/30/2/why-is-my-game-lagging