09-27-2007, 08:32 PM

is it possible to replace an older 300mhz G4 motherboard with a G5 one and processor?


Thanks
ACA

09-27-2007, 09:03 PM

Short answer.... no.

If you are looking at getting a used Mac, but want a little more power then just look for a higher spec G4. At least a ~700 Mhz model would do you fine.

09-27-2007, 10:21 PM

There was no 300MHz G4; the G4s started at 400.
http://www.everymac.com/systems/appl...wermac-g4.html

It is possible to significantly upgrade the machine (I'm assuming that it's a Blue & White G3), but as D3v1L80Y said, it will not take a G5 board or CPU. The G5 board will physically not fit in the case.

09-28-2007, 07:18 AM

You can't upgrade to new generations and use the same case and such. They make processor upgrades for G4's and G3's but it will be the same generation processor and they are incredibly expensive for what they do.
The G5's required a lot more space for the logic board and processors. They ran a lot hotter than the G4's so the cooling systems are enormous.
Personally, I do not like G5 PowerMacs. They are too expensive for what they do.
I would say find the fastest G4 you can find, I think a Dual 1.25GHz or Dual 1.42GHz or get an Intel Mac.

09-28-2007, 12:15 PM

Originally Posted by bryphotoguy

Personally, I do not like G5 PowerMacs. They are too expensive for what they do.
I would say find the fastest G4 you can find, I think a Dual 1.25GHz or Dual 1.42GHz or get an Intel Mac.

I am biased because I am driving a G5 right now, but I would disagree that they are too expensive for what they do. I would observe that they are still relatively expensive because they are very powerful and thus still very current machines.

There is a rough 1:1 equivalence between a G5 GHz and a C2D GHz. So, for example, a 2.0 GHz G5 has roughly the same horsepower as a 2.0 GHz C2D Intel Mac. When you think of it that way, the pricing that G5s still command starts to make more sense. Add to that the graphics cards they came with, the expandability and so forth, you can see that there is real value in the G5s. As final icing on the cake, the G5s still natively run a lot of software (albeit a declining number) for which there are not yet Universal binaries.

So, I conclude that G5s are still a very good deal, all things considered.