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rumi
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Click here to see the profile of this user 		processor - 2008/08/28 16:52 Question: I have a G4 quicksilver 800dp (2001), will a 1g dp processor from a 2002 quicksilver work in it? Budget restrictions and the nle software I am using which requires OS 9.2 require I maintain this system a little while longer till I can get another G5 with Final Cut Pro for the second editing bay. Bought a G4 dual 1 gig quicksilver at the local Goodwill computer outlet for parts. If I can switch the processors out, do I have to do any sort of processor upgrade? I don't work on computers, I just abuse them and our company IT department is strictly PC.

thanks for any help
Pat aka rumi
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krowmagnum
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Click here to see the profile of this user 		Re:processor - 2008/08/28 20:10 It should be plug no play. I did have one guy tell me he could not get a DP1Ghz to work in an older Quicksilver and I don't know why it wouldn't but it should. The boards are basically identical except for the IDE controllers.

You should put a very thin film of thermal paste on the CPU's to make a good connection with the heatsink. You could install the CPU to test it without thermal paste but if you run it very long it may overheat and freeze the system. If it does freeze it won't get hot enough to damage anything as long as you shut it down right away.

You could try it without the paste but in my experience the later G4's run hotter and usually need it.

Swapping the board and CPU would be a better option. The 2002 has large drive support and it's a pretty easy swap if you are somewhat mechanical.

Does the DP 1GHz boot ?
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rumi
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Click here to see the profile of this user 		Re:processor - 2008/08/29 09:21 booted fine, so we took the processor out of the computer and it is sitting in an anti-static bag till we know it will work in the existing G4 We think the problem with the G4 DP 800 is processor related, but that is a guess, because, none of my techs are familiar with Macs. When we shut the system down for the evening it is difficult to start the next day. Sometimes it freezes with grey screen and no cursor, if we re-start it may freeze on the "happy" face, or the os9.2 screen. sometimes it starts and we have no mouse or keyboard control. And sometimes when it starts loading, I get an error message concerning internal cache memory, call a technician. When I click ok, the computer loads and runs fine. I use a USB hub from the computer to the keyboard since the cpu is mounted in a rack, and sometimes, for lack of a better term, the green connection light on the usb is not on. We power down completely, have even hooked the G5's keyboard and mouse up to it to see if it is a problem. But you think the processors should just switch out? It's part of an editing system, and has boards in some of the slots, scsi's for external drives, etc. so we figured it would be easier just to switch the processors and not everything else.

thanks
Pat
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krowmagnum
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Click here to see the profile of this user 		Re:processor - 2008/08/29 11:48 I've swapped many of the QS G4 CPU's around and never had a problem and they all have the same pin connectors. But I've never had a DP 1Ghz to test but I see no reason it won't work in any QS G4. They guy I mentioned is just a user on another forum and there is no evidence of what he was saying means anything. He could have been using a bad CPU which is most likely the problem.

The internal cache error message sure sounds like there is a problem with the CPU or one of the CPU's.

But with the USB problem you are having it may be a problem with the board. But OS 9 is not the greatest OS in the world and after time it does odd things and a clean install is usually needed to get it running right again so it's hard to say if it's a hardware problem or a software problem.

What I would do is swap the CPU and the board because of the USB problem but first make sure it's not the hub causing the problem.

Have you tried plugging the kb/mouse directly into the board and bypass the hub ?

You can just put the CPU in and see what happens. Maybe it fixes it, maybe not. If not I would definitely replace the board too.
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rumi
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Click here to see the profile of this user 		Re:processor - 2008/08/29 14:37 Thanks for the reply. the mouse is plugged into the keyboard, then that goes to the usb hub since it is about 6ft to the back of the tower. The computer has been really reliable since we've had it. Had a processor go bad in december 2002, was replaced under warranty. no problems till the last month or so. Took a few power hits over the years till we put it on a UPS. We work it pretty hard, power on and editing and rendering video, graphics, after effects etc 10 to 12 hours a day 5 to 6 days a week. We are debating on whether to go ahead and swap the cpu now or wait till it won't start again. You suggest swapping the motherboard and the cpu together? I guess first thing is to try a re-install of the os. Never installed 10 because the media 100 version we use runs on 9.2 not 10.

tbanks again
Pat
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harryb
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Click here to see the profile of this user 		Re:processor - 2008/08/29 16:38 Plug the keyboard into the computer and not a USB hub. Apple make a special white extension lead for keyboards only to overcome your problem. Here is a link:


http://discussions.apple.com/thread.jspa?threadID=1237982&tstart=345
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