You might wanna skip frames

Why don't you use axe? You'll get a less optimized, but decent asm program.
0->C
While C+1->C-10000
End
Disp "Finished"
My TI 83+ does that in less than a second.

How many seconds does it take for it to get to 100,000 in Axe? I can't calculate it because all you said was "less than a second."

BTW, what does the -> mean in Axe?

EDIT: Could you send me the .8xp?

Ok, then make it count to 60,000.

EDIT: So I guess Axe can only handle 16-bit values. The max for a 16-bit value on my NXT is also 65535, if it is unsigned (Can only be a postitive number). But the NXT can handle 32-bit values. The max for an unsigned 32-bit value is 4294967295.

My NXT takes about 1.5 seconds to count from 60000 to 0.

EDIT: Actually, it takes about 2.2 seconds.

My NXT takes about 1.5 seconds to count from 60000 to 0.

EDIT: Actually, it takes about 2.2 seconds.

Did you make sure to turn off whatever OS overhead the lego thing has and write the test in a compiled language? The z80 is a very old chip, so I'd be a bit surprised if the more modern chip in an NXT is beaten by it.

EDIT:

Are you sure it can count to 10,000 in about 1/30th of a second?
That seems super fast.......

The z80 in an 84+ is running at around 15MHz in full speed. That's 15 million cycles per second, which gives a couple million operations per second. counting to 10,000 in a fraction of a second seems a lot more reasonable in that light. Also, counting isn't the best way to compare CPUs. More modern CPUs are going to be able to take advantage of counter hardware or very, very fast ALUs.

Looks like the NXT has an ARM7 chip inside. I can pretty much guarantee that an ARM7 at 48 MHz is faster than the z80 in the 84+. It's RISC, it has a real pipeline, caching, etc. If it's indeed an ARM7, then there's no real need to do anything more than compile this in with whatever your favorite NXT C/C++ compiler is and compare it to the Axe code given previously.

#include <stdio.h>
int main(){
  a=60000;
  while(a){
    a=a-1;
  }
  printf("Done\n");
  return 0;
}
Edit: Forgot main()...

Well the above code is written in C so someone would need to turn it in Z80.