Sometime in 1994 me and my father went to a small computer show in the UC Berkeley Student Union building (which appears to now be named The MLK Jr. Building). It was probably a Macintosh oriented event, and among the various tables there was a Power Macintosh 6100 on display. The first Macintosh computers used Motorola 68000 series chips, and in 1994 Apple was making a transition to PowerPC chips. The 6100 was the first Mac to use a PowerPC chip, and seeing one in person was exciting. PowerPC chips promised a leap in performance, and I wanted one very badly. I had to wait at least a year to enter the PowerPC world when my father bought a PowerMac 8500.
Some time ago a Mac enthusiast released a website, Infinte Mac, that allows you to run old Mac operating systems in your browser. It starts with System 1.0, and has many releases all the way up to MacOS 9, the last version of the original Macintosh OS before they made the switch to the Unix-based OS that's still in use today. I suggest you try it out, it's really fun! I like playing with the various options because it reminds me of using and playing with computers from my childhood. The machines include quite a bit of pre-installed software. Many of the games I played actually work, which is impressive. It also shows how interfaces have evolved and mostly improved over the last 30-40 years.
The website uses various software emulators (including Basilisk II and SheepShaver) to simulate specific CPUs. To rephrase, what's happening is that the classic Macintosh system is running inside of a bit of software that, on the fly, translates old CPU instructions so that they run on a different CPU type. This is naturally less efficient than running instructions directly on a real CPU.
Recently I tried running a benchmark program (Macbench) in the emulator. Below is what I got on my M1 Max MacBook Pro. As you can see, the processor score is nearly five times faster than the PowerMac 6100 I wanted so long ago. Considering that my laptop has ten cores, my laptop is roughly 50 times faster than the PowerMac 6100 while running in emulated mode. It's been 30 years and of course progress progresses, but I still find it super impressive how much faster my laptop is using software emulation. Sitting here on my lap is a machine that's orders of magnitude better than what my 14 year old self wanted so badly. Huzzah!
Earlier this month I bought a Mac Mini M4 to replace our six year old Mac Mini i3. As you can see, the M4 is over seven times faster than the PowerMac 6100. Being three generations newer than my laptop, it naturally gets a better score.
As an aside, I think that the floating point functions must be emulated in a less efficient way than the main processor functions. I don't think that the relatively low floating point scores are representative of the actual M1/M4 CPU performance.