Memory subsystem performance
We'll kick things off with our usual set of synthetic memory performance tests. As always, these tests tell us more about the particular characteristics of each CPU and system architecture than they do about real-world performance prospects. They let us look at how fast (in terms of bandwidth) and quick (in terms of latency) each CPU's memory subsystem can be.
No big surprises here. The B3-revision Phenoms slide right in where expected given their clock frequencies. As we've noted before, the Phenom achieves a nice combination of memory bandwidth and access latencies, due in part to its integrated memory controller. However, its access latencies to main memory are inflated somewhat due to the presence of its L3 cache. The Athlon 64 X2 lacks an L3 cache and is about 10ns quicker to main memory as a result.
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