I'm looking to give my Cel 400 on an 810 a little help... All I wanna do is play some 3d games in 640 by 480 on it for a little longer. I tried to play Black and White on it... BAD BAD BAD. So... I'm thinking about getting a $30 TNT64 with 8meg. Is this gonna be enough for some very infrequent game play (when GF is on athlon) in 640 x 480?