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Discuss IBooter can change iPhone bus clock at the PwnageTool - Hackint0sh.org; First of all, thanks A LOT to the entire DEV team for PwnageTool. Thanks to ...
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    Professional Array aakash.goenka's Avatar

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    Thumbs up IBooter can change iPhone bus clock

    First of all, thanks A LOT to the entire DEV team for PwnageTool.
    Thanks to all of them asap18, bgm, Bugout, bushing, chris, dinopio, drudge, Fred_, ghost_000, gray, kroo, MuscleNerd, NerveGas, netkas, np101137, planetbeing, pr3d4t0r, pumpkin, pytey, roxfan, sam, Turbo, w___, wizdaz, Zf working for the community and cmw who is porting the tool to windows. And Geohot for God knows how many hacks...

    And now, the main reason for this thread- I dont know if anyone noticed this, but according to http://www.iphonelinux.org/index.php/IBooter , iBooter can be used to change the bus clock using the command setbusclock.

    Is it the CPU speed, which is 412Mhz in 1.1.3 and 400Mhz in 1.1.1? Does it mean overclocking capability? It would be really great. But, to what extent would overclocking be safe on the iPhone?
    My iPhone --- 1.0.2 --> 1.1.1 --> 1.1.2 --> 1.1.3 --> 1.1.4 --> 2.0.1 --> 2.0.2 --> 2.1 Pwned(Thanx to the guides in this wunderful forum)

    My HaCkinT0sh -
    Triple boot - Vista, XP, Mac OS X Leopard 10.5.2 (Leo4Allv3)
    AMD ATHLON 64X2 6000+
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    No. If I remember correctly, CPU Freqency and Bus Frequency are completely different things.
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    drg
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    Well, we know the CPU frequency can be set in software. Apple has done this.

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    I used to overclock PC's many moons ago - and as far as I can remember when you increase the bus speed, that in turn increases the CPU speed...

    Or have I remembered it wrong?!

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    Its not overclocking. I think the iPhone processor is 666 mhz. But obviously they don't clock it at that because it would kill the batt. Anything over 666 is overclocking.


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    Rookie Array HighVoltage's Avatar

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    Quote Originally Posted by adamsweeting View Post
    I used to overclock PC's many moons ago - and as far as I can remember when you increase the bus speed, that in turn increases the CPU speed...

    Or have I remembered it wrong?!
    Be careful comparing this Apple to oranges...

    These are two completly different architectures. The iphone CPU is likely the Arm 1176jzf from Samsung rated to 667mhz. As mentioned it has been scaled down for battery life. The setbusclock may simply be a misnomer where it actually just changes the CPU speed and does not necessarily affect the periperhal bus.

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    Quote Originally Posted by Destructo View Post
    Its not overclocking. I think the iPhone processor is 666 mhz. But obviously they don't clock it at that because it would kill the batt. Anything over 666 is overclocking.
    I seriously doubt anyone would OC it to over 667. MAybe in the 400's or in the 500's unless you dont mind recharging your phone once every hour...:p
    iPhone 4 32GB

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    Anyone willing to try clocking up the speed of their iphone. It would be interesting to know if you could use the iphone as a hand warmer in the winter months.
    Peace,

    Dok

    :iphone: + :hack: =

    If you ever need any help, check out this thread, or PM me

 

 

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