Posted 03 March 2007 - 06:08 AM
The manufacturing process (65nm or 90nm) doesn't have anything directly to do with the cache. It refers to the average size of structures on the chip. A processors with smaller part needs less energy to run and so produces less heat. This takes on an added importance with the NetBurst-into-flames architecture, which both processors you linked to refers to.
The 2x2MB and 2x1MB means that the first one has 2MB of cache per core while the second only has 1MB cache per core. Here, more is better.
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