[retsevrah]

It sounds weirder than it actually is:

from: https://en.wikipedia.org/wiki/Amiga_4000 The three ISA slots can be activated by use of a bridgeboard, which connects the Zorro and ISA buses. Such bridgeboards typically feature on-board IBM-PC-compatible hardware, including Intel 80286, 80386, or 80486 microprocessors allowing emulation of an entire IBM-PC system in hardware.

from: https://en.wikipedia.org/wiki/Motorola_68040 The 68040 offered the same features as the Intel 80486, but on a clock-for-clock basis could significantly outperform the Intel chip in integer and floating point instructions. However, the 80486 had the ability to be clocked significantly faster without suffering from overheating problems.