Re: Cache density of Banias is really impressive compared to Thoroughbred
They're pretty different cache designs. Intel uses a very simple, but fast cache that helps it do well in "copy every fourth byte" applications like windows media encoder. AMD's cache is complex but slower, which helps Athlon/Opteron do well on SpecJBB and complex SQL queries.
In a nutshell, AMD's cache is less likely to overwrite bytes it shouldn't, but it takes longer to make that better decision.
If the application is a very simple, repetitive one, there isn't much contention for cache blocks, and Intel's fast design is the better approach. On complex applications, with more of the memory space in active use and more active allocated blocks, AMD's solution is the better one.
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