Two iMac G5 into one working

Graeme43

macrumors 6502a
Original poster
Sep 11, 2006
519
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Great Britain (Glasgow)
So my grandparents bought this iMac G5 1.9 isight as a refurb model in late 2005 and in 2011, they got an iMac i5 2.5.

My mum took over the use of the G5 just for email and web and bout a year ago it started getting lines on the screen :( thought it was the logic board so her husband bought some crappy 1.4ghz AMD Apu thing that uses 100% of the cpu just running windoze explorer. That thing is slowwwwwwww :roll eyes: I think my Tibook 500 is faster lol

Recently my mums friends iMac G5 just stopped booting and the beeps it made pointed to a RAM issue and since its onboard I figured there is no way to fix it. So I swapped the screens over and now have a working unit out of the two :D:D:D
 

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Graeme43

macrumors 6502a
Original poster
Sep 11, 2006
519
1
Great Britain (Glasgow)
I hear you! I have an iMac G5 as well and it runs in the 140-160º range (Fahrenheit). I had to look this up to make sure this was a standard temp and that the Mac was not overheating. But, it's a G5, so…
it quotes 85 as the max temp, but 70 is fine. if i set it to reduced cpu it drops to 60



I only done this to bring life back to PowerPC. I actually don't have much use for it myself as I have titanium powerbook with my powerpc stuff.

dropping classic support from 10.5 was a mistake and so was dropping powerpc rosetta stuff
 

Altemose

macrumors G3
Mar 26, 2013
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Elkton, Maryland
It seems to run quite hot! If my other macs got that hot id be very uneasy :(
Try checking out some of the Leopard graphics tweaks that I made into a guide on this forum. You will definitely appreciate the additional UI speed. One thing to note is that if this has the Nvidia 5200 not to enable QuartzGL.
 

eyoungren

macrumors Core
Aug 31, 2011
21,183
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dropping classic support from 10.5 was a mistake and so was dropping powerpc rosetta stuff
I'm no Intel Mac fan, but here I have to disagree somewhat.

With the exception of one app, for which I dedicated an entire OS9 machine, I have not had any need for Classic support since 2003. It's just a non-issue for me. OS9 was great, but I have long since moved on.

As to Rosetta, that was dropped in 10.7, which is two versions above 10.5.8, which is the latest PowerPC Macs can run. So, Apple dropping Rosetta in Lion does not affect us at all on PowerPC. And really, by that time the 2006 transition was long over. Take out the code, streamiline the OS. If you need Rosetta in Lion you are using a seriously outdated application.

Not being argumentative, just my opinions on the matter.
 

Hughmac

macrumors demi-god
Feb 4, 2012
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Kent, UK
It seems to run quite hot! If my other macs got that hot id be very uneasy :(
Tell me what you were running and for how long to get those temps, and I will try and reproduce tomorrow on my 1.9 iSight with 160GB HDD andf 2.5GB RAM, always running full CPU speed.
I'm pretty sure mine dosn't get that high though.

Cheers :)

Hugh
 

Altemose

macrumors G3
Mar 26, 2013
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Elkton, Maryland
it quotes 85 as the max temp, but 70 is fine. if i set it to reduced cpu it drops to 60



I only done this to bring life back to PowerPC. I actually don't have much use for it myself as I have titanium powerbook with my powerpc stuff.

dropping classic support from 10.5 was a mistake and so was dropping powerpc rosetta stuff
Did you remove or reseat the CPU? If you touched the heat sink fresh paste should of been put on.
 

Graeme43

macrumors 6502a
Original poster
Sep 11, 2006
519
1
Great Britain (Glasgow)
I'm no Intel Mac fan, but here I have to disagree somewhat.

With the exception of one app, for which I dedicated an entire OS9 machine, I have not had any need for Classic support since 2003. It's just a non-issue for me. OS9 was great, but I have long since moved on.

As to Rosetta, that was dropped in 10.7, which is two versions above 10.5.8, which is the latest PowerPC Macs can run. So, Apple dropping Rosetta in Lion does not affect us at all on PowerPC. And really, by that time the 2006 transition was long over. Take out the code, streamiline the OS. If you need Rosetta in Lion you are using a seriously outdated application.

Not being argumentative, just my opinions on the matter.
I still have a 2001 Titanium Powerbook for OS9 games :) Dual boots 9.2.2 and 10.2.8
I do miss Rosetta though as there was one PowerPC app that still has not been ported over. SpyOSX


Try checking out some of the Leopard graphics tweaks that I made into a guide on this forum. You will definitely appreciate the additional UI speed. One thing to note is that if this has the Nvidia 5200 not to enable QuartzGL.
It has a X600 Pro so I could try

Tell me what you were running and for how long to get those temps, and I will try and reproduce tomorrow on my 1.9 iSight with 160GB HDD andf 2.5GB RAM, always running full CPU speed.
I'm pretty sure mine dosn't get that high though.

Cheers :)

Hugh

I was just copying files from my Mac Pro. Using AFP always seems to use a high amount of CPU on all the macs I have here ranging from iBook G3 to MacBook Pro 2.4


Did you remove or reseat the CPU? If you touched the heat sink fresh paste should of been put on.
Never had to remove CPU
 

Hughmac

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Feb 4, 2012
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Kent, UK
I don't use AFP but I'll fire her up in a mo and give her some video to process, then report back in an hour or so

Cheers :)

Hugh
 

Altemose

macrumors G3
Mar 26, 2013
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444
Elkton, Maryland
I still have a 2001 Titanium Powerbook for OS9 games :) Dual boots 9.2.2 and 10.2.8
I do miss Rosetta though as there was one PowerPC app that still has not been ported over. SpyOSX




It has a X600 Pro so I could try




I was just copying files from my Mac Pro. Using AFP always seems to use a high amount of CPU on all the macs I have here ranging from iBook G3 to MacBook Pro 2.4




Never had to remove CPU
It may be good to repaste the heat sink. Thermal compound has an average life expectancy of 5 years, and less if pushed regularly. However, few people actually change theirs but it greatly helps.

Follow the guide to disable BeamSync (V-Sync) and all animations will seem faster and smoother.
 

Graeme43

macrumors 6502a
Original poster
Sep 11, 2006
519
1
Great Britain (Glasgow)
It may be good to repaste the heat sink. Thermal compound has an average life expectancy of 5 years, and less if pushed regularly. However, few people actually change theirs but it greatly helps.

Follow the guide to disable BeamSync (V-Sync) and all animations will seem faster and smoother.
I have never changed mine in any Mac I have owned but I do dust them out like my Mac Pro. I don't have the tool to take out the CPUs so I have no choice but to just leave it. If I had the tool Id upgrade her to 8 core :) its a 2006 model. I have a PowerMac G3 and it has no paste on it at all.... hmm

Seems a bit blasphemous mentioning intel stuff in this PowerPC forum lol
 

MrPilot

macrumors 6502
Apr 30, 2013
313
15
This is cool!

Good job on saving one imac! I fixed an issue with my MBP last week, screen looking just like yours by reflowing the logic board in the oven then reapplied thermal paste.
 

Altemose

macrumors G3
Mar 26, 2013
9,089
444
Elkton, Maryland
This is cool!

Good job on saving one imac! I fixed an issue with my MBP last week, screen looking just like yours by reflowing the logic board in the oven then reapplied thermal paste.
I am going to guess you either have a 2011 MBP or the 2007/2008 MBP since they both had graphics issues.

----------

I have never changed mine in any Mac I have owned but I do dust them out like my Mac Pro. I don't have the tool to take out the CPUs so I have no choice but to just leave it. If I had the tool Id upgrade her to 8 core :) its a 2006 model. I have a PowerMac G3 and it has no paste on it at all.... hmm

Seems a bit blasphemous mentioning intel stuff in this PowerPC forum lol
I am saying that changing the paste is a great way to lower temps, as well as taking care of your fans (replace when bearings start to go). Either a 17" or a 20" is a difficult repair to do just for paste, but it may be lucrative to do. Get some paste on that G3, you are asking for trouble with it.
 

Hughmac

macrumors demi-god
Feb 4, 2012
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Kent, UK
OK, after a while processing an MP4 to DVD in Toast 10, CPU is at 99-100%, temp up to 70°C.

See attached pics for iStat Pro on startup, and about an hour into processing ...





Also you can see I've cleaned the screen for the 2nd photo :D

Cheers :)

Hugh
 

Graeme43

macrumors 6502a
Original poster
Sep 11, 2006
519
1
Great Britain (Glasgow)
OK, after a while processing an MP4 to DVD in Toast 10, CPU is at 99-100%, temp up to 70°C.

See attached pics for iStat Pro on startup, and about an hour into processing ...

Image

Image

Also you can see I've cleaned the screen for the 2nd photo :D

Cheers :)

Hugh

I guess 70-72 at max CPU is average then :)

I guess thats what affected the PowerBook G5 series :(
 

Altemose

macrumors G3
Mar 26, 2013
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Elkton, Maryland
I guess 70-72 at max CPU is average then :)

I guess thats what affected the PowerBook G5 series :(
Still seems a little hot to me. Maybe someone with an iSight iMac G5 can chime in? My PowerMac G5 (Way Different I Know) is hovering around 45 c with Leopard WebKit, QuickTime, Spotify, and Temperature Monitor open. Just a point of reference...
 

Hughmac

macrumors demi-god
Feb 4, 2012
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Kent, UK
If you look at the iStat Pro temps from my above post (taken on an identical machine to the OP), you can see in the photos that even under 100% CPU the temp is stable at about 70°C, and the fans are not running wildly.

I've used my iSight for a number of years as a video processing machine and it has always been so.

I also have another iMac G5, a 1.6GHz, and as a comparison the fans are extremely active and loud. It achieves similar CPU temps under load.

Cheers :)

Hugh
 

RedCroissant

Suspended
Aug 13, 2011
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Still seems a little hot to me. Maybe someone with an iSight iMac G5 can chime in? My PowerMac G5 (Way Different I Know) is hovering around 45 c with Leopard WebKit, QuickTime, Spotify, and Temperature Monitor open. Just a point of reference...
Hello!

Well I gave away my 17" iMac G5 1.9GHz w/ iSight and I can tell you that those temps are normal. It seems like it's hot but once you get used to it and see that those temp levels don't negatively impact the machine (I had mine running 24/7 for weeks at a time for Home sharing, printer sharing, school work, my kids playing games..etc). It was my main machine until I got the 20" iMac G5 1.8GHz (which also ran at around those temps).
 

Altemose

macrumors G3
Mar 26, 2013
9,089
444
Elkton, Maryland
Hello!

Well I gave away my 17" iMac G5 1.9GHz w/ iSight and I can tell you that those temps are normal. It seems like it's hot but once you get used to it and see that those temp levels don't negatively impact the machine (I had mine running 24/7 for weeks at a time for Home sharing, printer sharing, school work, my kids playing games..etc). It was my main machine until I got the 20" iMac G5 1.8GHz (which also ran at around those temps).
That is one thing that I hate about all in one designs is the fact that they are giant heat sinks. They are always hotter than desktops. Do you have a newer Intel iMac? How is the temps on those?
 

RedCroissant

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Aug 13, 2011
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That is one thing that I hate about all in one designs is the fact that they are giant heat sinks. They are always hotter than desktops. Do you have a newer Intel iMac? How is the temps on those?
LOL on the giant heat sink analogy.

I do actually and the temps hover around 100F mostly. As of right now I have 11 tabs open in Safari, Mail, Textedit, Finder operations working, and iTunes streaming to my AppleTV (of course all of this is in addition to the basic tasks being performed by the machine. So not bad I think!
 

Altemose

macrumors G3
Mar 26, 2013
9,089
444
Elkton, Maryland
LOL on the giant heat sink analogy.

I do actually and the temps hover around 100F mostly. As of right now I have 11 tabs open in Safari, Mail, Textedit, Finder operations working, and iTunes streaming to my AppleTV (of course all of this is in addition to the basic tasks being performed by the machine. So not bad I think!
That isn't bad at all. What processor is in yours?