Conroe has 4MB of cache compared to 1MB for K8. 4 times the cache equals half the cache miss-rate i.e. a doubling of the cache hit effectiveness which is not negligible. I have just given you a link which confirms from Fred Weber himself the lions share of the performance improvement, 'first order of magnitude', is the improved memory latency. Yet still you persist in believing simplistically that all uarch improvements give the same improvement ! That is so ridiculous not even a newb would claim that, only a fool drowning in his stupidity would claim that. Here's another big friggin clue for you, numerous benchmarks have shown that K7 and K8 perform virtually identically in cache bound work. What would that tell an intelligent person ?
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