Wanted: Advice on performing 68040 upgrade for Q605

#31 Mon, 21 Jun 2010 - 09:40

Bargain!

Of course, that is for *without* the coprocessor.

#32 Tue, 12 Mar 2013 - 19:08

There's another simpler way to get to 40 MHz which used to be available from here:http://gabezing.sytes.net/LC475-40Mhz-E.html

However, that site's been unavailable for a while and archive.org doesn't have copies. Does anyone have a copy or know of a mirror? We need to put those up.

Just wanted to add that the original Hack of the LC475 is magically available again. i guess sytes.net has removed their restrictive robots.txt, wich in turn led Archive.org to list the old sites as available again. Enjoy "Reach to Quadra840AV? LC475-40Mhz-Clockup" by Hiromasa Yamaoka:

http://web.archive.org/web/20040219005118/http://gabezing.sytes.net/LC475-40Mhz-E.html

#33 Tue, 12 Mar 2013 - 19:40

from the link above:

I changed MC88920 to MC88916DW80, and my LC475 is working at 42Mhz perfectly. Higher clock causes unuseable serial ports (Ummm---regrettable).

Wow 42mhz that is pretty bad-ass! !

I hate to sound non adventurous. I'm pretty happy with 33mhz OC!

from the sound of it, /w More work, I could drive that higher!

But then if i do this…. I will end up talking my self out of wanting a Quadra 840av. I want one !

#34 Tue, 12 Mar 2013 - 22:46

Some LC475 run stable at 40MHz just as they are. Why not try it before you get a large 840av?

And when it works, treat yourself by getting a new 840av. ;D

#35 Thu, 21 Mar 2013 - 01:54

But then if i do this…. I will end up talking my self out of wanting a Quadra 840av. I want one !

Yeah,but then you'll have to see how over clocked you can get the 840! 48? 50? 66?