YAWN...... IBM have done this for years - more like decades
On the old 360/370 MVS systems (1980s) the cheaper to 'buy' models were only different in the CPU's microcode having an inbuilt slug (count to a thousand before doing the next instruction type stuff). True even of the IBM clones like Persetel.
You could temporarily lower or remove the slug to improve performance for busy periods, like year end or a big DB reorganisation and IBM would bill you for the time it was removed in the next monthly support invoice.
Biting the hand that feeds IT
