I read the review on the 4155 and I'm somewhat confused as to what the specific test results indicate. The question has already been asked why some of the graphics are so much slower on the 4155 vs 2215, but in a lot of the online reviews the 2215 was mysteriously slow for the overall graphics system. Specifically there is an "N/A" listed for the GAPI Lines for the 2215, what is the GAPI Lines test? I know that GAPI is like a superminiature version of directdraw, but is the "N/A" the same reason that the 2215 looked like it performed poorly in other reviews?