VAX 7000/10000 - CPU Module

CPU Module

The initial Model 600 used the KA7AA CPU module, which contained a 90.91 MHz (11 ns cycle time) NVAX+ microprocessor with 4 MB of B-cache (L2 cache). Later, the clock frequency of microprocessor featured was increased. The Model 700 used the KA7AB CPU module containing a 133.33 MHz (7.5 ns cycle time) NVAX++, and the Model 800 used the KA7AC CPU module featuring a 170.9 MHz NVAX++.

The CPU modules had two LEVI gate arrays which interfaced the microprocessor to the Laser System Bus, the system bus.