 There was one model of the VAX 10000 AXP, the Model 6x0.Code-named ""Blazer/Neon"", it supported one to four 90.91 MHz (11 ns) NVAX+ microprocessors, with the value of "x" being 1 to 4.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).