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PowerMac G3 Mod


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#1
Andropov

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It isn't good hardware, but I just want to give a speed up to my old 300Mhz B&W G3 using some hardware that I have lying around.
Specs:
- Unknown motherboard :worried_anim:
- Intel Core 2 Quad a 2,66Ghz (Before: PowerPC G4 a 300Mhz)
- Nvidia GeForce 8400GS en PCIe (Before: ATI Rage 128 en PCI)
- Hard Drive IDE Western Digital 160GB (The same)
- RAM 1GB DDR running at 1066Mhz (Before: 1GB PC100)
- CD/DVD double layer drive (Before: lector de CD-ROM)

Some photos of the original PowerMac G3 (sorry about the poor quality of the first ones):
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Just the original computer open.

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The old CD-ROM drive

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The old processor, a PowerPC G4 running at 300Mhz.


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And after the mod (in progress):


I don't change anything in the external case appearance

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The new mobo. It's on a wood panel because the moounting points are too difernt and I would't break the entire chassis. The CPU heatsink hasn't got a fan on it because it crashes with the power supply and I can't close the case. At least, the wooden panel will eliminate all the vibrations of the graphics fan.

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The hard drive on its rack. It isn't connected because I need a larger molex wire.

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I take this photo before I put the new power supply.
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The new power supply. I take out the louder, bigger, 120mm fan, and I put a 80mm one, taking the air out of the case. I will cover the hole with a PVC panel.

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After put the new power supply. As you can see, I need a larger molex wire, a larger chipset wire and a larger CPU wire. :hammer:

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A photo with the case closed. As you can see, the heatsink is really near to the power supply. If I put a fan over the heatsink, the case wouldn't close. So, maybe I'll use a water cooling system.

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After a few months I want to use a water cooling system, with a double radiator in the bottom of the fan, replacing the hard drive rack. And I change the original yellow led of the power button, now it's blue (I think it looks better).

Sorry about my bad english :wink2:

#2
buoo

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You are doing a good work :)
I have a PowerMac G5 Case too, but I have no time to keep my hands on it :\

#3
Phoenix2058

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Nice work! I've done the same with a G5 and i have a G4 in my basement too and also a bunch of hardware, i'm also planning to do that with it :wink2:

#4
Andropov

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Nice work! I've done the same with a G5 and i have a G4 in my basement too and also a bunch of hardware, i'm also planning to do that with it :wink2:

You are doing a good work :)
I have a PowerMac G5 Case too, but I have no time to keep my hands on it :\


Thanks! :D


Finally, with a cardboard box I found a provisional solution. When I close the case, the CPU heatsink is in front of the fan.


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I was measuring the area for my 2x120mm radiator. In the bottom of the case, I've a 290x130mm area, completely clear from mounting points. I think I should use an Alphacool NexXxoS ST30 Full copper. It has a 15mm spacing between fans, so it's a little bit longer, perfect for my non-standar 290x130mm area. The radiator measures 279x 124x30mm.
For the CPU block, I'm planning to use a EK Supreme LTX Acetal Black. But, Can I use 90º fittings for the block?

The area for the radiator:

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