030 is tooooooooo slooooooooooooow
030 has practically no cache
so its very very sloooow
The fastest instructions on an 030 take 2 cycles
The fastest instructions on an 040 take 1 cycle
The fastest instructions on an 060 take .5 cycles
although predicted branches take approx 0 cycles
The answer to your question is very simple:
Check how much money you have
and get the best accellerator that you can get for that price.
I recommend an 060
but if you are poor then you could try an 040
p.s. 030 sux for web browsing