The performance issue is a bit different if you are a 3D gamer. The chart contains the benchmark results at 640x480, as we wanted to show the difference between all those processors. Expendable is a very CPU demanding benchmark, so that the playability will depend on your CPU - the faster, the better. But usually a Celeron 566 and a GeForce card provide enough performance for most Direct3D games at 1024x768x16 and up. Getting a super fast Pentium III will raise your frame rates at low resolutions, but it won't improve the playability if in any major way.