Hey currently I have a 3 year old Dell desktop, and I will be upgrading to a blackbook soon. I just have a few questions. My Dell has a pentium 4 2.8GHz and 512GB ram, will I notice a huge difference going to the 2.2 blacbook with only 1GB ram? Also, on my dell I have a Intel 82845G/GL/GE/PE/GV graphics, card, will this be better or worse than the Intel X3100 on the macbook? If the X3100 is better then the graphics on my macbook should be just fine for me.