HOW IBM SEES THE Z9 BC'S PROCESSING POWER

STRICLY PERSONAL, NOT IBM'S BUSINESS

IBM sales reps and authorized mainframe resellers are being told to think in long-forbidden terms, and to characterize hardware capacity in terms of MIPS.  The ratings may be somewhat arbitrary, but for now they are the only way for prospective users to guess how much it cost to alter the speed of a z9 BC, which is governed by microcode.  In practice, there are only two models, the R07, with up to three general purpose engines, and the S07, with up to four.  All other disctncions are the result of microcode magic.