1) What do Cache L1/L2/L3 size really effect? Will there be a lot of performance difference if Cache L1/L2/L3 is larger? If so how much performance difference will there be? What application will benefit from a larger Cache L1/L2/L3? And what application will not be effected by it? Comparing between AMD X2 3800+ and AMD X2 3600+. 2) How much performance difference will there be between 1950 pro 256MB and 1950pro 512MB?