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  1. LightBulbFun

    iMac G3 (Rev A -> C) G4 CPU Upgrade

    exactly what i was looking for thanks :) very interesting indeed it does not properly identifier the CPU but still picks up on the L2 cache heh (the CPU Type field is pulled directly from OF if you go into OF and temp edit it to say "PowerPC is Awesome" it will show up as that in OS X heh) I...
  2. LightBulbFun

    iMac G3 (Rev A -> C) G4 CPU Upgrade

    very coo thanks heh :) I did warn you about the thermals is there any way to adapt a bigger heatsink perhaps out of copper? also what sort of issues have you been having with Leopard and where/what part does geekbench/the system freeze on? also I do appreciate the shots :) but I did...
  3. LightBulbFun

    iMac G3 (Rev A -> C) G4 CPU Upgrade

    Gave it another reflow. the L2 cache still not showing up/is reporting cache failure in POST messages. I dont want to keep reflowing the board as it is getting kinda crispy so to speak so ill just leave as is a 600Mhz G4 Pismo with no L2 cache LOL tho maybe if i can learn how to reball i might...
  4. LightBulbFun

    iMac G3 (Rev A -> C) G4 CPU Upgrade

    @belgaonkar I do recommend updating to 10.4.11 once your done with said app as the update contains many bug fixes and improvements :) btw got any pictures of it running OS X? system profiler shots etc? I have been asking for a good while now :) @TarableCode theres still a few for sale but...
  5. LightBulbFun

    iMac G3 (Rev A -> C) G4 CPU Upgrade

    LOL! :) the FireWire clamshells (I assume thats what your referring to) use the 750CXe CPUs and are not compatible with any sort of G4 upgrade the only iBook G3 that is compatible is the first non FW Clamshell iBooks (PowerBook2,1)
  6. LightBulbFun

    iMac G3 (Rev A -> C) G4 CPU Upgrade

    another status update still mucking around with the Pismo :) I got the thing clocked up to 600Mhz! its quite fast at that speed especially with the 1MB L2, I did get it benchmarked in tiger. tho while doing so in Leopard the L2 cache died again mid benchmark and crashed OS X LOL and when i...
  7. LightBulbFun

    iMac G3 (Rev A -> C) G4 CPU Upgrade

    AFAIK cache is tied to the CPU speed (CPU speed goes up so does cache). how far the cache can go im not sure on one hand most of the reports I have seen say L2 cache G3/G4s dont over clock that well on the other hand we do have the G4 Upgraded iBooks rocking G4s at 533Mhz with L2 cache near...
  8. LightBulbFun

    iMac G3 (Rev A -> C) G4 CPU Upgrade

    Oh awesome :) tho its a FP iMac its the Non US model so uses a regular 360 BGA 750 and backside L2 cache it has the model identifier of PowerMac2,2 (the first gen slot loader is 2,1 but the Lobos are swappable I also Just talked to a guy who has been an AASP guy for many years and has worked...
  9. LightBulbFun

    iMac G3 (Rev A -> C) G4 CPU Upgrade

    Just tried the board again and sadly it does the same thing :( at least its repetitive (ie it does it every time) and nothing has gone up in smoke as far as i can see so i have not shorted any main power rail to a sensitive data line for example... i think LOL I do see 2 bridged balls on the...
  10. LightBulbFun

    iMac G3 (Rev A -> C) G4 CPU Upgrade

    thanks :) just got semi finished with the iMac sadly it does not boot (CRT energisers and i get a pop from the speakers but thats it) so iv just tried reflowing the G4 chip one more time to see if that will work (currently waiting for the board to cool down again) Just wondering if i cannot...
  11. LightBulbFun

    iMac G3 (Rev A -> C) G4 CPU Upgrade

    very cool! glad to see its working for you :) im about to attempt fitting a 7410 to my Slot loading iMac G3 so ill report back on that when i finish it :)
  12. LightBulbFun

    iMac G3 (Rev A -> C) G4 CPU Upgrade

    bit of a status update and some good news. so id like to report that the G4 upgraded Pismo has been working nicely since i did the CPU swap on it (never had it kernel panic for example) but the non working L2 cache was bugging me so yesterday i decided to fix it :) based on other reports of L2...
  13. LightBulbFun

    iMac G3 (Rev A -> C) G4 CPU Upgrade

    with a cloned install of 10.5 on the drive the iBook should boot right up its a uninorth machine, all the drivers (apart from video drivers) should be in Leo already, in regards to the PowerBook Pismo IIRC i booted off of a USB stick from the built in USB 1.1 ports then before it found root via...
  14. LightBulbFun

    [POLL] Desktop G3 VS Mini Tower. Which do you prefer?

    https://browser.geekbench.com/geekbench2/2622693 heres my Kanga score as mentioned above :) the 95 was achieved by an 8600/250 (604ev) running tiger that i setup for another friend of mine which you can see here https://browser.geekbench.com/geekbench2/2594131 but yeah I like making OS X (and...
  15. LightBulbFun

    iMac G3 (Rev A -> C) G4 CPU Upgrade

    Cool. So your running firmware 4.1.9 then? im well aware That this is a PowerBook2,1, in that regard you dont have to modify the tiger ISO to install Tiger on it, with a couple OF commands you can temporarily fake your machine as a PowerBook2,2 and install tiger using a stock tiger CD. (well one...
  16. LightBulbFun

    iMac G3 (Rev A -> C) G4 CPU Upgrade

    very nice to see the iBook running :) do note that the thermal diode on 750/7400/7410s are not calibrated normally so i would not really believe that thermal read out. in regards to clock speed i think its just variants in the program try comparing it to another program and see what it...
  17. LightBulbFun

    iMac G3 (Rev A -> C) G4 CPU Upgrade

    Sounds like a plan! :) Pismo should work nicely with a G4 upgrade mine has been working perfectly fine temps are good as well with the stock heatsink setup a small amount of AS5. in regards to upgrading the PPC G3 NuBus Card and the PowerStar CPU upgrade card what you have to check is...
  18. LightBulbFun

    iMac G3 (Rev A -> C) G4 CPU Upgrade

    very cool! hows the thermals like at that speed? :p btw did you ever get OS X running on it and the firmware update installed? also at 533 is it still reporting as running at 67Mhz or? I wonder what say this reports http://macintoshgarden.org/apps/gauge-pro. im still on the look out for...
  19. LightBulbFun

    iMac G3 (Rev A -> C) G4 CPU Upgrade

    there are professional shops that can remove BGA chips reball em and put them back in place on what ever PCB you want them to do it on. with that said you could probably overclock the 500Mhz 7410s that every man and his dog in the far east seem to have for sale :) to 550Mhz. (and id not be...
  20. LightBulbFun

    iMac G3 (Rev A -> C) G4 CPU Upgrade

    if i could thumbs up a post i would the above one :) yeah afaik no one ever offered a Upgrade service for the clamshells. (incase anyone is wondering the G4 upgrade done to the Pismo is still working nicely heh)
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