[G4] Re: TemperatureMonitor

[CJ Scaminaci]

On Dec 27, 2004, at 2:40 PM, Ron Steinke arrogantly wrote:
> Tony didn't say that his G4 was a 1GHZ native machine. My G4 is a 
> Gigabit Ethernet model with an upgrade 1GHz processor, but it never 
> had a temperature sensor in it. If Tony has put an upgraded processor 
> in an older G4, he cannot expect that there would be any temperature 
> sensors built into the case.

You misunderstood. By G4 1Ghz models I was talking about the processor 
itself. I believe it was the 7450 and later that didn't have the 
feature. The three servers here that have a G4 model prior to 7450 do 
have temperature sensors. The remaining 8 that are post 7450 do not. 
That should give you a good idea of what I mean, considering the 1Ghz 
model was the 7455 (with the exception of the hundred or so 7450 chips 
that made it into some quicksilver machines).

> It would be nice to see a list of the G4 machines that DO have 
> temperature sensors rather than be told that Apple didn't put sensors 
> in "a good portion of the 1GHz models... They were deemed to 
> inaccurate....". Does such a list exist, or does someone have to put 
> it together for posting?

He never asked a specific question, I was merely giving the information 
I knew was true. Why are you so hostile over such a trivial matter?

> If a true temperature monitor/indicator is the subject of discussion, 
> that is a horse of a different color. The installation of sensors and 
> temperature control software was to reduce a heat problem, not to 
> provide internal temperature readings like a cooking thermometer. I 
> haven't heard of anything that will give a real-time readout of 
> temperatures within the machine case. Maybe there is something in the 
> Martha Stewart cooking hardware department?

I think there's probably a reason there's nothing around. Cooling Macs 
is trivial, they don't have heat problems (with the exception of the G4 
Cube). The reason anything pre-7450 even had a temperature sensor was 
because they were using FPGA's to simulate the CPU in development. That 
was a point where changing chip architecture actually helped reduce 
heat! It was merely in production machines for a convenience factor; 
meaning, it was more or less a cooking thermometer :).

--------------------
-CJ Scaminaci
CEO - Fuzzy Entertainment
Chief Software Engineer - MemtestOSX
http://memtestosx.org