The Evergreen one that works with the Bridgeboard is a Model 300 "Rev to 486". I bought mine on a closeout for about $30.00. It tripled the clockspeed as I remember. Sadly I sold all of my BB stuff years ago, it was still too slow.
Look Here for links to pictures;
http://homepage3.nifty.com/sandy55/Interposer/386_upgrade.htmlThe Cyrix one I still have somewhere, I think it was a Cx486SRX2 25/50. Both of these just stick on top of the 386 chip. They didn't really seem like they would stay but I never had any problems except heat.
Now you guys are making me wish I still had my Bridgeboard :-).
Jeff
