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View Full Version : Power Mac G4 up to 2.0GHz via 3rd party?




LOLZpersonok
Apr 9, 2013, 06:08 PM
I was reading the article for the Power Mac G4 on Wikipedia, and where it gave information about the system just below the picture it said "Single or dual PowerPC G4, 350MHz - 1.42GHz (Up to 2GHz through 3rd-party.)".

How is this possible? And, if so, how could I do it? What parts would I need? Would I be able to keep the dual processor configuration, with two 2GHz CPUs? I've always been interested in making my Power Mac G4 MDD faster than it already is.



Intell
Apr 9, 2013, 06:19 PM
Yes, it's possible. You'd need a hard to find, expensive 2Ghz or dual 2Ghz G4.

LOLZpersonok
Apr 9, 2013, 06:21 PM
Yes, it's possible. You'd need a hard to find, expensive 2Ghz or dual 2Ghz G4.

How much would they cost? Would I look on eBay, or this other site, I can't remember the name of that gives all information on ALL Macs?

Intell
Apr 9, 2013, 06:23 PM
I haven't seen them for sell in a few years. Not many were made. I'd put their price at upwards of $175.

LOLZpersonok
Apr 9, 2013, 06:35 PM
I haven't seen them for sell in a few years. Not many were made. I'd put their price at upwards of $175.

That is expensive...I probably wouldn't find one anyways, so thanks for the help.

PowerPCMacMan
Apr 10, 2013, 09:27 AM
What you want is the PowerLogix 2 Ghz upgrade.. Check ebay on occasion as you might find one on there.. otherwise, IntellMR is right.. the chance of you finding one is almost nil.. and of course once you do find one I expect it to be really expensive.

That is expensive...I probably wouldn't find one anyways, so thanks for the help.

666sheep
Apr 10, 2013, 10:25 AM
All above is true but unfortunately not for MDD.
Highest clocked 3rd party upgrade for it was Sonnet dual 1.8 7447A.
Slower than dual 1.42 7455B.
These 2.0 GHz ones were for Sawtooth/GE and DA/QS and Cube.

PowerPCMacMan
Apr 10, 2013, 10:30 AM
Yeah, its a shame the DLSD PB G4 didn't use a 7455B mobile chip... I wish L3 was added to that it would have sped things up to compensate for the slow 167mhz bus.

All above is true but unfortunately not for MDD.
Highest clocked 3rd party upgrade for it was Sonnet dual 1.8 7447A.
Slower than dual 1.42 7455B.
These 2.0 GHz ones were for Sawtooth/GE and DA/QS and Cube.

666sheep
Apr 10, 2013, 10:44 AM
Yeah, its a shame the DLSD PB G4 didn't use a 7455B mobile chip... I wish L3 was added to that it would have sped things up to compensate for the slow 167mhz bus.

They could have used 7457 but picked 7447A instead.
I would prefer 1.33 7457 over 1.67 7447A.

Frost7
Apr 12, 2013, 04:58 AM
PowerLogix made a single CPU 2.0 GHz 7448 G4 upgrade and a dual CPU 1.8 GHz 7448 G4 upgrade for PowerMacs, and those were the fastest that were on the market before said upgrades stopped being made.

Far as finding them, best I can tell you is eBay. I never see them but if you put up a saved search that e-mails you with results, you might eventually get lucky.

The 2.0 GHz model sold out I think back in late 2010/early 2011, and I bought literally the very last retail dual 1.8 that PowerLogix had in March last year for my G4 Digital Audio 733 hotrod build. (That unfortunately is not for sale unless you're willing to offer an absurdly high amount that would make me want to give up that machine. :) )

They could have used 7457 but picked 7447A instead.
I would prefer 1.33 7457 over 1.67 7447A.
I've also got the single 1.42 GHz 7457 that PowerLogix made, as that was the CPU said PMG4 was using up until last year. I don't know about 7457 vs 7447, but I have to say, despite the lack of an L3 cache, the 1.8 GHz 7448 absolutely destroys the 1.42 7457 in games in the same G4 running a 128MB GeForce4 Ti4600. With the 7457, Halo Mac was pretty CPU bound and I had to run it at 800x600 to keep it smooth. After putting in the 1.8 7448, I was able to kick that up to 1280x1024 at max detail with the same framerate.