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PowerMac G5 Cooling/Sensor Issues?

Appleinsider points to sensor issues causing delays in the PowerMac G5 updates.

According to a "reliable" Appleinsider source, "Apple was recently forced to completely rework the internal temperature sensors inside the current G5 case design to accommodate the new 90 nanometer G5 processors."

The information is somewhat consistent with early rumors of cooling issues with the new PowerMac revisions.

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102 months ago
If the current case can cool the old chips why couldn't it cool the newer and cooler chips? Or don't I understand something?
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102 months ago
this might be the problem, but hasn't apple had a while to deal with issues like this?
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102 months ago

If the current case can cool the old chips why couldn't it cool the newer and cooler chips? Or don't I understand something?


The article said the chips WERE cool, but the sensors were misreading the temperature and thus made the fans go wild. Supposedely that's fixed now, but there are just supply issues at this point.
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102 months ago
if this is true and apple has been holding back Rev. B's which probably wouldve been up to 2.4gig processors will they release what "wouldve been" between the dual 2's and the 3's [dual's or single's] or just skip ahead to what probably wouldve been Rev. C three gig'ers...???

doesnt seem like the summer is shaping up the way steve-o had hoped...

long live the apple digital music corp...
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102 months ago
The real question is why should we believe this or care? Either they're coming out soon, or they're not.

And I agree that this sounds strange given that the new chips are supposed to run much cooler. The only explanation would be a case reworking which has lead to a heat up inside. But hey- as long as they come out soon I couldn't care less if they had to use ultra-poisonous freon to cool them. ;)
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102 months ago
I wonder if this ties in at all to the drive bay cooling issues as well. I know that 10.3.3 has made a decided difference in my G5 DP (2x160G), but that the essential design had a bit of a flaw.

Just musing.
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102 months ago
Why is this a problem? If the g5 case in its current configuration runs fine cooling the 130 nm chips, why are the smaller 90 nm chips which are supposed to be cooler a problem? Actually did they ever say anything about being cooler or did they simply say require less power?
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102 months ago

If the current case can cool the old chips why couldn't it cool the newer and cooler chips? Or don't I understand something?


It has to do with the sensor and not the issue of cooling; it could be that since the new chips aren't as hot, the current temp sensor are relatively useless. ;) :p :)
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102 months ago

Why is this a problem? If the g5 case in its current configuration runs fine cooling the 130 nm chips, why are the smaller 90 nm chips which are supposed to be cooler a problem? Actually did they ever say anything about being cooler or did they simply say require less power?


You guys need to read the article. It is not a heat issue, it is a sensor issue. The new chip sits differently and gives out the same amount of heat, but sensor was forcing the machine to shut down. It's a minor issue that the article claims is fixed now.

The real news, though, is that IBM is not able to produce chips faster than 2.0 -- according to AppleInsider. It's not that they can't get to 3.0, they can't get to 2.8, 2.6, 2.4, or 2.2!
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102 months ago
maybe since the newer chips are smaller, they couldn't use the same sensors because of the size difference? it could either be making the fans not going on enough, or too much.
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