Help with overclocking (kind of)

5 posts / 0 new
Last post
Offline
Last seen: 18 years 10 months ago
Joined: Feb 1 2005 - 12:48
Posts: 16
Help with overclocking (kind of)

Hello,
I want to put a 68040/40 on my lc575 board and I guess I need to change to a 20mhz oscillator. I found Chris Lawsons page on the parts needed but I can't seem to find the 'how-to' on actually changing out the oscillator.
Since I won't really be overclocking the chip, do you think I can get away without using a heatsink/fan?
Thanks all for the help.

Offline
Last seen: 18 years 10 months ago
Joined: Feb 1 2005 - 12:48
Posts: 16
found the link

via this forum to Jag's house. Still wondering about the heatsink and fan...

moosemanmoo's picture
Offline
Last seen: 9 years 12 months ago
Joined: Aug 17 2004 - 15:24
Posts: 686
If I remember correctly, the

If I remember correctly, the 40MHz 68040s used a rather minimal heatsink. No fan. As for changing the oscillator, I think you would have to remove the old one and solder in the new one.

Offline
Last seen: 11 years 5 months ago
Joined: Dec 20 2003 - 10:38
Posts: 180
Mystic Overclocking - from the web archive

http://web.archive.org/web/20030702143907/http://gabezing.sytes.net/lc575-40mhz-e.html

Enjoy!

Stuart

Offline
Last seen: 18 years 10 months ago
Joined: Feb 1 2005 - 12:48
Posts: 16
Success at 40mhz

Got my mystic running at 40mhz now, with a 68040/40 chip. That was a fairly nerve racking soldering job - at least for me - made the vga mod to the analog board seem easy in comparison. Pretty cool result though!!! Now to get it running faster Smile I don't need the serial ports to work, just my network card and I've got 70ns vram. Anyone got some faster than 20mhz oscillators they want to swap? I've got one at ~18 and another at ~19.

Log in or register to post comments