JMS: You might say that the sempron is a shit, but it is highly overclockable. I can run it at up to 2.5ghz. So it only has 256kb of cache. Its the same processor as the A643200, with half the cache. A friend of mine has a athlon 64 3200, and in ANY cpu test I smoke him at stock cpu speeds, although I have 2gb of pc4000 running at DDR580...