Thread: Overclocking G5 dual 1.8
03-21-2005, 09:08 AM #1TripStaGuestOverclocking G5 dual 1.8
Is it possible to do this to a dual 1.8?
If so, how, and to what?
I overclocked my Beige g3 to 300mhz!!!!
Sorry if this has been asked already.
03-21-2005, 09:28 AM #2
- Member Since
- Oct 30, 2004
- San Antonio, Texas
- PowerMac G4 Cube 450mhz 832mb
I know it can be done, just not sure how exactly, though you'd need to remove a few jumper pins some soldering is involved.
03-21-2005, 01:23 PM #3
Originally Posted by Macman
- Member Since
- Jun 25, 2004
- Luxemburg, Europe
- PowerMac G5 Dual 2GHz (June 2004), 2.5GB, Airport, black 5G iPod 30GB, white MacBook 2.0 2GB
For example, the 1GHz, 1.25GHz and 1.42GHz in the MDD all had the same FSB, just different multpliers through soldered jumper settings (and different CPUs actually), while the G5 in PowerMacs (except the recent single 1.8GHz) all run at double FSB, this means the speed increase was achieved by setting the FSB higher. Playing with this is a lot more delicate, as changing the FSB will raise the probability of an unstable system, as all system parts, PCI and AGP cards included, will get higher frequencies, which they surely won't work with.
Overclocking is nothing less then playing with the constructor's tolerances. Doing so with one component (the CPU or the video chip) can be succesfull, though it won't significantly increase overall system performance.
But if you overclock the FSB, you overclock everything, the problem is that every single chip or additional card might have very different tolerances, so making everything working together is quite difficult.
And as far as I know no G5 has yet been overclocked, and, honestly, I don't think it will happen soon...it's much more complicated than it was for the G3 and G4.
03-22-2005, 12:18 PM #4TripStaGuest
thanks for that, cheers.
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