kenji
Full Member
Posts: 105
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Post by kenji on Sept 11, 2006 1:00:19 GMT
Hi, I noticed recently that the 120 mm fan doesn't spin faster anymore upon boot-up. I opened the case too see if it's actually spinning and it was spinning. Before, it used to spin fast then gradually slow down after completing the boot-up sequence. Now, it won't. Is this abnormal? Nevertheless, the CPU remains at an average of 56 degress when idle and maximum of 58 degress when encoding from DV to DiVX. Thanks
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Post by aquamac on Sept 11, 2006 4:53:30 GMT
Hi Kenji,
I had noticed the same thing on my FW800 before I changed the fan kext, but my FW400 did rev up. If you are running the latest version of Tiger, then it is fairly likely to be this. Apple have messed around with the fan kexts quite a bit over the last few years, trying to solve G5 reving problems, a side effect of this may be making a difference to your 800. 55-60 range seems about right for a dual, you will see a big improvement if you use chud and nap, probably around a 8 degrees decrease in temps.
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kenji
Full Member
Posts: 105
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Post by kenji on Sept 11, 2006 5:42:54 GMT
Hi Kenji, you will see a big improvement if you use chud and nap, probably around a 8 degrees decrease in temps. Thanks aquamac. Regarding the chud and nap, I read somewhere in the Apple Forum, a guy from Greece, (I'm not sure if he was actually the person) mentioned something like the chud and nap is useful only when the Mac is not doing CPU intensive applications like surfing the net, word processing since chud and nap will throttle down the CPU usage. But for CPU intensive applications, the CPU usage will throttle up even if there is chud and nap installed. I'm not sure if what I'm saying is right, sorry. On the otherhand, is chud and nap not a threat to my hardwares most specially to CPU and motherboard? I'm worried it might blow out the CPU or motherboard. Thanks again Kenji |
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Post by aquamac on Sept 13, 2006 5:15:03 GMT
Chud & nap will not harm your hardware, quite the reverse, your CPU will throttle up & down as required, so it will immediately start to cool when it stops doing intensive work. I have been using it for ages, makes a big difference, but even when running test apps there is no difference to performance that I can see. Tiger is the first OS that it works particulally stable under.
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