I would like to know whether there could be a driver I'm missing, since sysinfo can't see the correct value for my CPU frequency


It's probably just because the processor frequency has dropped to save power due to it being idle. If you run a processor intensive task and look again you should hopefully see the correct frequency.

You can also see this information by running cat /proc/cpuinfo in a command line. For example, my computer has one core currently heavily loaded. Along with a load of other information I get this for the heavily loaded core:

model name : Intel(R) Core(TM) i7 CPU 950 @ 3.07GHz

cpu MHz : 3060.000

So that just about matches up with the 3.07GHz. For another core I get:

model name : Intel(R) Core(TM) i7 CPU 950 @ 3.07GHz

cpu MHz : 1596.000

The current frequency is halved over the maximum.

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  • Ok I'll try loading sysinfo again when I'm running a cpu-intensive task. I'll come back then to tick your answer. – Felipe Jul 15 '11 at 14:40

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