ppc 603 speedup

[kas1e]

hi. i just interesting, how high i can speedup ppc 603x240
and it anyway  work ? 280 ? 300 ? more ?
who do it speedup on ppc, maybe can answer to me ?
thnx.

[lempkee]

Sounds like you are talking about overclocking, yes it can do 260/280 etc but it would need alot of cooling and it would be rather slow (mem access) also there is more issues to this , check this link_: http://www.zap.to/ppcoverclock

have fun.

[kas1e]

realy good url. big thnx.

[KennyR]

Is a 20MHz speedup really worth the time, risk, and effort?

[lempkee]

very good question kenny , infact the answer is no ...

but if you have the expertice to cool it down well enough then its another story , it wont help with coolingpaste on the rib and a major big fan , u need to be abit more into it.

i have met 68k users who has used coolingpaste , and i guess u know what that means

anyway if its a 040ppc card you might be in hard luck due to the known issues ... but clocking from 200->240 shouldnt make your life misserable,but the speedup aint exactly major due to there is still the 78k context..ie if you have a 040/25 ....u better clock that instead...atleast first...

[kas1e]

hi agayn.

now , i overclocking my ppc. and my cpu now work in
266 mhz (don't need any coolers for good work). so,
big thnx for url, and i have some quastion more:


1. what differend 603 P, 603 E , 603e + ? (i have 603p).
  and how different 603e 200, and 603e 240 (only mhz ?)

2. i have old blizz 68060 acceselator. and now i have
    my blizz 603p 266 + 040x25. So,  maybe i can just
    unsoldering my 040, and put on him place old 060
    from blizz68060 acceselator ? I think this realy can
    be ?

p.s. some time later i try overclocking oscill on 70mhz    
  + speedup resistor to 300-400 mhz + cooler. maybe  
   this a work

[Karlos]

Dont do it!

Whilst pin compatible, AFAIK you cant just bang an 060 into an 040 socket since it uses a lower core voltage (3.3v as opposed to 5v), so there's a real risk you could burn it out :-o

I'm not so sure overclocking your PPC to 300 MHz is such a good idea either, but 266MHz (which I seem to recall is what the 240MHz version is rated up to) and maybe 275MHz are not so bad.

I think I'll leave my 240MHz as it is and see if yours takes 300+ first ;-)

[lempkee]

forget about your060->040ppc board , on a1200 you have the volt factor, i have no knowledge of any a1200 user who have done this and i guess thats because its not a good idea at all.

for cppc boards this is another story.

i think i have a link, let me see if i can find it for later.

btw, U sHOULD COOL IT , as your fpu will die if not , and if it does then you can scrap your card.

put cooling paste on the chip (under the sheild (YES MORE!) and put a big fan on the ppc sheild/rib , then you should also cool down your 68k, as this will get very hot aswell due to the memory issues and speed, even if you are still running it on 25mzh.

but do it properly and do it like the link says, anyway i warned you and dont come screaming on here if it dies all of a sudden.

good luck