@3246251196:
The main reason for increasing the processor-speed is not the speed itself, but the ability to get more than 8MB of fastram, which will need a cpu with 32-bit external addressing and as far as I know, no card has been made with a cpu capable of that which isnt faster than the A1200's stock cpu.
The A1200's stock cpu which has 24-bit external addressing limits the amount of fastmem you can add to 8MB disregarding what you do (4MB if you also want to be able to use the PCMCIA-port for stuff like networking).
A card like the Blizzard1230 contains a cpu which can address more memory plus the accelerator itself supports more than 8MB without interfering with the PCMCIA-port.
There are actually a bunch of bad 020/030-accelerators which can only handle 8MB of memory even if the cpu on them are capable. If you see one of those you can be sure that it also interferes with the PCMCIA-port if more than 4MB is used - just like the stock A1200.
Nevertheless, you can get by with just a fastmem-expansion for your A1200, which also will increase the speed with about the double, but it is just handier to have more memory if say you want to play large games with WHDLoad and still use your network card.
Actually, you can play just about all games with say just 4MB fastmem, but if there is not enough memory to preload a game in WHDLoad (games over 3 disks generally), all disk-access will get very slow and make the computer flash the screen every time it needs to switch back to the OS to load more data which is _VERY_ annoying.
/Patrik