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Performance Differences between theMPC8240 and the MPC106Top Changwatchai and Roy Jeneveinrisc10@email.sps.mot.comThis paper discusses some of the major performance differences between the MPC8240&OTIlde;smemory and PCI interfaces and those of the MPC106. This document compares theMPC8240 (rev. 1.0) the MPC106 (rev. 4.0). It contains the following:¥ Part 1ÒArchitectural Differences,Ó discusses architectural differences between thetwo parts which impact performance.&NTIlde; The MPC8240 offers faster memory and PCI buses and features PCI datastreamingcapabiliTIes.&NTIlde; The MPC106 supports an external L2 cache, but this may result in lowermemory bus speed.¥ Part 2ÒSimulation,Ó presents results from an analytical model used to comparevarious system conÞgurations which highlight these architectural differences.Part 1 Architectural DifferencesThis section discusses the differences in memory, L2 cache, and the PCI bus interfacebetween the MPC8240 and the MPC106.
