• Yokemate of Keyboards
    Yokemate of Keyboards
    Posts: 11764 from 2003/5/22
    From: Germany
    >> iMac G5 iSight also has U4/CPC945. Besides,
    >> U3/U3H/CPC925 is also used in PowerMac G5 AGP ;-)

    > This can be carefully checked, if the iSight have full U4 (CP925) and not "light"
    > like AGP iMacs. If it is full CPC925 and the same revision used on Quad, it can
    > be 1.25 GHz capable (depends on certain version used on certain iMac).

    There seems to be some confusion. U4 is CPC945, while CPC925 is U3/U3H.
    Changing the ratio on the fastest iMac (2.1 GHz) from ⅓ to ½ would result in 1.05 GHz (as you wrote in comment #19), so testing 1.25 GHz isn't possible this way. What's the maximum frequency a "lite" version of the U4 would be able to run at in your opinion?

    > open your iMac, check exact northbidge type and revision

    iMac G5 iSight: https://www.flickr.com/photos/htomari/15420568058
  • »26.04.22 - 14:21