I'd definately get the radeon...the 420 is pretty slow when compared to a 7500 on desktop systems...but then again this is a laptop system but I doubt that would really change much...beisdes games easily use more than 16megs of video memory so the extra 16megs on the radeon should help...one last thing...I don't know if you or anyone else could answer this...but what does the "C" mean on the radeon?