Hardware differences in the 9373 and 9375 processors

In order to have a broad range of performance in processors, more than one model must exist. A family of processors infers systems with enough commonality that a smaller model can be upgraded to a larger one with minimum effort by retaining as much of the existing hardware as possible. This paper describes the differences between the Models 20 and 40, which have basically the same internal engine, and the Model 60, which has additional hardware to give it improved performance. The paper begins with a description of what cache and TLBs (translation look-aside buffers) are, and explains how they affect the performance of a processor.