I have a 68060 and no accelerator!

[Kronos]

-

an EC060 clocked at 75/80mhz probably
would be similar during FPU intensive calcs
as a full '040@40mhz. I

WHAT ?

Even CF-CPUs (without FPU) are outperfomed by a lousy 68882,
and those beasts run at up to 200mhz.

Floating-point done in Integer is atleast 10 times slower
than done with a FPU in the same range, so when you want to
do anything that uses the FPU, I would advice you to stay
with the 040 or get a real 060.

[Damion]

>WHAT!???:"_)(_(_)++?<>{]]<><><><>,

It's a solid guess...the '060 stomps the '040
in integer performance, so to say that
floating point done in integer on an
overclocked '060 would be similar to a much
slower '040 is not a ridiculous wager...sure it
may not be 'EXACTLY" as fast but I bet it
wouldn't be an earth - shattering difference...
I could however be totally 'off my rocker' here.

It's agreed though a full '060 is obviously
a better choice...an FPU for FPU tasks...

[Kronos]

Well just take an FPU-intesive that alos exist in a non-FPU
version and give both a try  :-D

[Damion]

LOL, Unfortunately I don't have my '040 and
'EC060's with me right now...so I think I'll
just duck out now on this one...

[melott]

Sorry but I don't agree....
I only have my own experience to gage it.
But on my machine, and I'm sure the A3640
card is working OK, the difference is very
small. I'm not a gamer or do rendering or
any of the really processer intense things.
I just do some word processing and tring to
learn some programing also serfing the net.

So in my case the card wasn't worth the effort.
I don't really see a difference.
Normally, the difference has to be 10% or more
to see it and on my card it just isn't there.

Mel Ott

[dkedrowitsch]

060 on A3640??  No can do.  The 060's are NOT 100% pin compaible, the 060's have one more row of inner pins that the 040's lack.  So, an 040 can work in an 060 card, but an 060 can not work in an 040 card that has not been designed with 060 upgrades in mind.

The A3640 lacks these inner pins in the socket.

[A3KOne]

try this link for overclocking the A3640.

A3640 Overclock

The difference between the overclocked 3640 and the factory 3640 is greater than the factory A3000/25 and the stock A3640.

When I did the hack, I was using a CV64/3D.  The difference in p96speed was incredible for just an 8Mhz overclock.  The A3640 was a poorly designed upgrade.  It should have been at least 28Mhz to function properly with the motherboard.
I socketed my oscillator crystal by cutting pins off of an IC socket and soldering it to the board first as it suggests in the article.  That way I could try different speeds.  I have heard of people clocking the 3640 all the way up to 40Mhz.... although I was never brave enough to try.  I might have done it if I had run across a good deal on an 040 designed for 40Mhz.

Good luck...this is making me want to get an Amiga again!

[vortexau]

I've heard it said that the best clock speeds are in the range of multiples of 7Mhz. That sounds reasonable as it then matches with the speed of the rest of the system i.e. not having to waste clock cycles.

The A1200's 020 was clocked at 14Mhz - there was one 28Mhz 020 board and there have been several 28Mhz 030 boards.