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You are here: MacNN Forums > Hardware - Troubleshooting and Discussion > Mac Notebooks > Is xBench really accurate? Why the huge decrease in CPU?

Is xBench really accurate? Why the huge decrease in CPU?
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May 20, 2003, 05:24 AM
 
I bought a new iBook 900 a few days ago and ran xBench on it. I was impressed; however, today I ran it again after having used it for a few days and the score went way, way down. There was a huge decrease in the CPU. It was getting 97 before, now it has dropped down to the 60 mark for CPU. Everything else, I guess, is close to the original time I ran xBench. Nothing was running in the background! I used a Mac OS X program called Process Viewer and CPU Monitor to check. Could someone explain this to me. My machine still feels as fast.

Thanks
(Last edited by davidcarr; May 20, 2003 at 05:42 AM. )
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May 20, 2003, 04:16 PM
 
From what I've noticed... xBench tends to give erratic results at best. I'd imagine that your first "97" score was a little off (since my 12" PowerBook got 71's and 1ghz TiBooks get about a 90).

Nate
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May 21, 2003, 08:32 AM
 
As with any benchmarking, one should run it multiple times but best results.
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May 26, 2003, 08:39 AM
 
two things:
1)try it a few times and see if you are still stuck in the 60's (too low for a 900Mhz G3).
2)MAKE SURE that in energy saver advanced options your machine is not set for reduced processor speed to extend battery life. that would explain the huge drop.
     
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May 26, 2003, 10:17 AM
 
Originally posted by Colonel Panic:
two things:
1)try it a few times and see if you are still stuck in the 60's (too low for a 900Mhz G3).
2)MAKE SURE that in energy saver advanced options your machine is not set for reduced processor speed to extend battery life. that would explain the huge drop.
Thanks. It was the energy saver thing. Back up in the high 90s and a couple of times even 100s.
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May 26, 2003, 11:52 AM
 
Originally posted by davidcarr:
Thanks. It was the energy saver thing. Back up in the high 90s and a couple of times even 100s.
Wow, sounds like I should buy a 900...
     
   
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