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 33 MHz 68040 Processors
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Flash
Full Member


Australia
637 Posts		 Posted - 07 Nov 2001 :  07:25:34
Hmm, I have a few things I can swap sell and give away lying around. I qguess I need to make a list. In the mean time I have three 33MHz 68040 processors available. They're fantasic in a Quadra 605/LC 475! 5 bucks each, contact me at vdu99@hotmail.com :)

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General, 4 star


USA
1559 Posts		 Posted - 07 Nov 2001 :  19:00:28
this might be kinda off topic but if you replace a 68040 (for example a 25 Mhz) with another that has a higher clockspeed (33 Mhz), don't you have to adjust the bus multpliers to get anything above 25?

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Flash
Full Member


Australia
637 Posts		 Posted - 08 Nov 2001 :  01:47:22
That's correct, my LC 475 is still running at 25 even though I'ce got the faster processor in there. I call it having 'headroom' :) I reckon you could probably use a 33MHz 040 in a 40MHz machine with good results too (I'd certainly like to try it out anyway!)

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Flash
Full Member


Australia
637 Posts		 Posted - 22 Nov 2001 :  02:33:53
Any takers? My inbox has not exactly been bomarded with requests for a new processor. C'mon guys (and gals), I know there's a LOT of Q605/LC475's out there that are just crying out for a FPU

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candyPunk
Full Member


USA
856 Posts		 Posted - 22 Nov 2001 :  20:19:33
What's involved in adjusting the bus multipliers? Is that the trick that involves moving jumpers around? Can't say I've ever seen any of those little things in a 68k mac... If it's that simple, though, I'd take one.

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Flash
Full Member


Australia
637 Posts		 Posted - 23 Nov 2001 :  18:45:29
I havn't done it myself, but it's definitely a project I want to do (along with lots of other projects I'll probably never have time for) Check out the Clock Chipping Homepage http://violet.berkeley.edu/~schrier/mhz.html

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Flash
Full Member


Australia
637 Posts		 Posted - 25 Nov 2001 :  23:54:26
OK the heat is off, I've found a good home for the 040's. Should I delete this post now, or just leave it here? Hmmmmmm

Flash!

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Captain Z
Mobile Ops Commander


USA
637 Posts		 Posted - 26 Nov 2001 :  00:33:17
No, just let the post die off into the sunset, or have LeeMac lock it to since it no longer needs updating.

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Flash
Full Member


Australia
637 Posts		 Posted - 26 Nov 2001 :  06:54:43
Die damn you die!


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LeeMac
Trading Post Commander


USA
202 Posts		 Posted - 26 Nov 2001 :  09:30:58
Locked and Chained!!!!!!

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