I think the few games I can't run with WHD load have to do with the 040 and 060 cards I've had in my A1200.
Like others said you really need some fast ram to get most games to run with WHD load.
With extra ram or a 68030 you will get much better frame rate in flight and driving simulators such as F1G and F19.
AI intensive game like Battle Chess spend less time calculating the users moves.
I also noticed that Settlers will take advantage of fast ram by allowing you to have much larger maps.
