3 Replies Latest reply on Oct 30, 2011 8:43 PM by Boyet

    i3-2100 runs only at 2.5GHz

    zhwfreewill

      The i3-2100 only runs at 1.6-2.5GHz, never reach up to 3.1GHz, even when I try to load it with a lot of computing.

      I ran Super Pi 1 million, got 15 seconds to finish.

      But if I go to msconfig--boot--adv options--# of processors, choose 3, restart the computer, then the cpu will run at full speed(3.1Ghz). When I change it to default or 4, it slowed down to 2.5Ghz again.

      Did i get a defective cpu?

      thanks!

        • 1. Re: i3-2100 runs only at 2.5GHz
          Boyet

          I think that the default for the number of processor box in the advance option of msconfig is uncheck. If you put it back to uncheck try rebooting. Then run Turboboost monitor. Run a virus fullscan and look at the monitor. It should show a fluctuation from minimum to maximum. This condition is normal.

          • 2. Re: i3-2100 runs only at 2.5GHz
            zhwfreewill

            Thank you for advice, Boyet.

            I tried put it back to default. It didn't work. CPU at 2.5GHz, and 1 million Super Pi takes 16 seconds to finish.

            But if I "block one processor" in msconfig, CPU will be at 3.1GHz, and 1 million Super Pi only takes 11 seconds. Weird...Huh

            I have also tried re-install Windows 7, still have the problem...

            any sugestions?

             

            p.s. i3-2100 does not support Turbo boost

            • 3. Re: i3-2100 runs only at 2.5GHz
              Boyet

              You're right I3-2100 does not support turbo boost. You can use OpenHardwareMonitor instead. Perhaps you should dig up your user guide and specification guide for the motherboard to shed light on your question. You did not provide what mb you're using so I can't help you any further.