LJ Archive

Table 1. Comparison of Alpha 21164 and 21264 Processors


21164 (ev5,ev56)                     21264 (ev6, ev67)
--------------------------------------------------------------------------------------------
Dual issue                              Quad issue
--------------------------------------------------------------------------------------------
Simple branch predictor                 Tournament branch predictor
--------------------------------------------------------------------------------------------
Direct mapped, write-through cache      Two-way set associative cache
--------------------------------------------------------------------------------------------
Simple instruction scheduling rules     Complex instruction scheduling rules
--------------------------------------------------------------------------------------------
                                        Roughly twice the bandwidth of the 21164
                                        New instructions: WH64, CTLZ, CTTZ
--------------------------------------------------------------------------------------------

LJ Archive