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PowerMac G3 Mod

Joined
Mar 20, 2012
Messages
5
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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) :





Just the original computer open.








The old CD-ROM drive






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







And after the mod (in progress):


I don't change anything in the external case appearance






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.




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







I take this photo before I put the new power supply.



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.







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:












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.












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 :p
 
Joined
Feb 18, 2011
Messages
190
Motherboard
Sawtooth Build
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i5 650 @ 3.3Ghz or 3.7Ghz
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MSI nVidia GeForce 610 2GB
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128K, 512K, Apple, Centris, iMac, LC, Performa, Power Mac, PowerBook, Quadra
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Take a look at my "sawtooth" build. I had similar issues but everything fit fine inside my case. The G3 and G4 "Sawtooth" cases were very similar.
 
Joined
Mar 20, 2012
Messages
5
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Finally, with a cardboard box I found a provisional solution. When I close the case, the CPU heatsink is in front of the fan.







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:

 
Joined
Mar 12, 2011
Messages
86
Motherboard
ASUS P8P67 M-Pro
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i7 2600k
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ATI 5770 Vapor-X by Sapphire
Classic Mac
Power Mac
Hallo,
thats my water-cooling solution in a G4-case
 

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Joined
Jun 27, 2012
Messages
102
Motherboard
z77m d3h mvp rev 1.0 bios f6
CPU
i5 3507k ivy bridge @ 4.2
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EVGA gtx 680
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MacBook Air, MacBook Pro
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iMac
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I second that. use aluminum or acrliyic..

idk about water cooling... radiators seem to take up a lot of room.. unless you are planning a oc.
 
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