Ok, so my logic board on my iMac died, oh well, it was only a 350. So i am going to either buy another 350 or a 400 to replace it. I want to overclock it and logic boards are quite cheap on ebay so if i screw up it wont really matter. Im really good at soldering so the skill part is no problem. I just need to know what would be safe to overclock to? I am up for adding fans and changing the heatsink etc. but i want the fastest iMac g3 I can get!!! haha. Could someone also post up a table of which resistors i have to change.
Thanks!
Found the page!
http://www.bekkoame.ne.jp/~t-imai/imacde1.html
WOAH! I know its probably a huge no-no, but 1ghz!! Id like myself a bit of that if you please! Ideally 600mhz is what i want, i dont know if that would be possible though. Only things i need to know now are:
1) Safest, Highest speed
2) I've been looking at other overclocking pages, and they mention Level 2 Cache + Bus speed overclock, and how you need to do that to get some speeds. Explain??
3) That table makes absolutely no sense to me, it might as well be written in latin. eesh. help??
THANKYOU!
I doubt you could get it that high. when I found the chart for my B&W, the theoretical limit of the jumper settings is +800mhz, but in reality, I was only able to bump the speed up from 350mhz to 400, only 50mhz increce. probibly get 450 or 500mhz if I hadd a fan atop the heatsink. just a matter of finding one that small.
in order to get 1ghz, you'd need to get a chip that would support it, but the mobo deffinently does, as upgrades past 1ghz do exist for that model, but they use thier own jumpers/resistors.
so, at best, you'd see only a 50-100 mhz increce, maybe a bit more. but you most likely could get an extra 50mhz for free form the stock chip.
hope that helps.
-digital
Ok, just scrounged a 600mhz with 16mb vram logic board off ebay for £35! Bargain! so now, if i dare, i want to upgrade it to 700mhz. is this safe, because ive been looking at pictures of the boards and they are practically identical. is the only difference where the resistors are? thankyouuuu
i'd believe it is, but who knows? they might have kept them in the same place for the majority of the CRT 'macs. but then again, there is an exception to every rule.
good luck with that. post a pic when your done. do ASP or macbench or some similar program. i'm also interested in how much heat those later CRT 'macs threw off, as the earlier ones had so little they used convection cooling, but the latter modles had fans, like you wanted to install in yours. you might want to search for an iMac fan mount while your at it, so you could hust drill holes in the case for the mount, and then screw in the fan.
-digital
would those resistor settings i posted be the same for all the slot loaders? becuase i dont have the settings for the 600-->700mhz hack. cheers
dunno, I'm no expert in model to model mac changes. if your lucky, you could probibly find it like you did before.
good luck
-digital