Success!!!!! Well, partial success at least. I got a little bored this afternoon and decided to play around w/ my CS motherboard... I pulled out my trusty 15W soldering iron, some tweezers, and a toothpick and succeeded in upclocking my 100MHz 603e based 5300cs to 116.7MHz !!!
It's not much of a speed boost, but for everyone who wishes they had the extra 17MHz, I finally figured out how to do it! For the record, this is what I did: -I moved resistor R48 to position R46. I tried booting at this point and succeeded in getting some garbled chimes, but no boot. -I moved resistor R43 to R127 I tried booting at this point (w/ extensions disabled*) and got to the desktop. I'm running Newer Tech's Gauge Pro's memory tests right now with no crashing... If you want some details on how to change your CPU multiplier from 3x to 3.5x, go to my website : <http://homepage.mac.com/alk/projects/5300/5300oc.html> The site hasn't been updated w/ my success yet, but the info is correct. However, if you are looking for the best speed boost, I'd still go for changing your bus speed to 36 or 38MHz - a faster bus means a faster CPU _AND_ faster memory throughput - a big bottleneck on this machine. Next project: install 512K of extra VRAM on the standard 100MHz mobo to "create" a CE motherboard! (Yeah, I probably won't do this, but it's nice to think about...) I'll write back later when i've run a few tests to see if it's stable. Anyone have a copy of MacBench? I can't find it anywhere on the web... :-( Peace out! (an excited) Drew * Unfortunately, the machine is not useable when booting w/ extensions enabled - because it only has 512K of VRAM, the display gets all "messed up" (it's a CE display - 800x600 - requiring 1MB of VRAM). If someone wants to try this mod on their 5300cs or 'c, let me know how it works! I'm betting that there will be no problem, so long as you have the proper amount of VRAM for your particular display type. -- Having graduated (with a physics BS :-P), I will be using the email address <[EMAIL PROTECTED]> Please update your address book. <http://homepage.mac.com/alk/> "Anyone can fly, all you have to do is throw yourself at the ground and miss." -Douglas Adams, Hitchhikers Guide to the Galaxy -- PowerBooks is sponsored by <http://lowendmac.com/> and... Small Dog Electronics http://www.smalldog.com | Enter To Win A | -- Canon PowerShot Digital Cameras start at $299 | Free iBook! | Support Low End Mac <http://lowendmac.com/lists/support.html> PowerBooks list info: <http://lowendmac.com/lists/powerbooks.shtml> --> AOL users, remove "mailto:"; Send list messages to: <mailto:[EMAIL PROTECTED]> To unsubscribe, email: <mailto:[EMAIL PROTECTED]> For digest mode, email: <mailto:[EMAIL PROTECTED]> Subscription questions: <mailto:[EMAIL PROTECTED]> Archive: <http://www.mail-archive.com/powerbooks%40mail.maclaunch.com/> Using a Mac? Free email & more at Applelinks! http://www.applelinks.com
