Yeah, I'm not sure why you'd want to go that route. Maybe Tension meant to say 060? 040's run at 5vcc whilst the 060 runs at 3vcc. Then you're gonna to have to raise the desktop case, install a fan, etc., etc. Unless of course, you get a Blizzard 1240, remove the 040 and install an 060 you got for dirt cheap somewhere 
That would make sense methinks... lol
I had an 040 25mhz card in my A2500 for a very short stint and feel it did not give me that much more improvement speed wise than my 030 @ 40mhz. But I'm talking general desktop usage. Perhaps somebody rendering or using their machines a little more professionally would disagree. But then I'd think they'd want to invest in an 060 anyway.
I never had a problem with my Apollo 1240 040 28Mhz. Although I did upgrade the fan to a bigger unit when i put the A1200 in a tower, just because I could
I was always led to believe that if given a choice,always go for the 040, even if it's a 28Mhz 040 rather than a 50Mhz 030.
Of course this was all before the Internet. All I was using was my monthly editions of CU Amiga (Or Amiga Format if CU Amiga wasn't in.)
P.S. The 060 cards for any Amiga are so prohibitively expensive that I can't imagine anyone ever owning one. It's like they don't even exist.
