Cpu core speed problem

hi all ,,,,,OK there is the problem
CPU-z it says my core speed 2.4ghz but the fact is 3.4ghz and my bus speed is 199mhz the fact its 800mhz

what is the problem is it psu am using a 10$ psu @ 200watt
and yeah the bus speed doesn't change it stays 199mhz
but the core speed changes every minute to 3.4ghz for a second and then get back to 2364.0 MHz

is changing the power supply solve this issue???
my PC specs
Intel 945gccr main board
Intel Pentium 4 3.4ghz with HT enabled
2.5gb 400mhz ram
9500gt 1gb ddr2
200watt psu 10$ valued
9 answers Last reply
More about core speed problem
  1. themainevent94 said:
    hi all ,,,,,OK there is the problem
    CPU-z it says my core speed 2.4ghz but the fact is 3.4ghz and my bus speed is 199mhz the fact its 800mhz

    First, check your multiplier. I will bet that the CPU is not running at full speed because it's idling under light load. You put a substantial load on the CPU and it will go back to full speed.

    Both the 199 and the 800 numbers are correct. They are stating the same thing in two ways. The FSB frequency is 200 MHz. A small variation in the frequency crystal means it is being reported at 199 MHz. The FSB clock is 800 MHz. Because the bus is "quad-pumped", each bus cycle generates 4 bus clocks.

    Although a better PSU certainly wouldn't hurt, it's not the cause of your "problem".
  2. themainevent94 said:
    hi all ,,,,,OK there is the problem
    CPU-z it says my core speed 2.4ghz but the fact is 3.4ghz and my bus speed is 199mhz the fact its 800mhz

    what is the problem is it psu am using a 10$ psu @ 200watt
    and yeah the bus speed doesn't change it stays 199mhz
    but the core speed changes every minute to 3.4ghz for a second and then get back to 2364.0 MHz

    is changing the power supply solve this issue???
    my PC specs
    Intel 945gccr main board
    Intel Pentium 4 3.4ghz with HT enabled
    2.5gb 400mhz ram
    9500gt 1gb ddr2
    200watt psu 10$ valued

    What you're witnessing is C1E in action.

    It's a power saving feature that automatically lowers your CPU clock multiplier and voltage when the system isn't doing anything CPU intensive.

    Serious overclockers will disable C1E in the BIOS Setup because it can introduce instability.
  3. thx guys so i dont have a power problem at all
    am running palit 9500gt 1gb ddr2 75watt minimum
    and pentium 4 3.4ghz 115watt minimum

    i ll guess changing the psu will increase the performance a little bit wont it???
  4. Not a bit. PSU has no impact on performance; it can only introduce instability.

    Though with just a 200w PSU you have no room to overclock or upgrade.
  5. ko888 said:
    What you're witnessing is C1E in action.

    It's a power saving feature that automatically lowers your CPU clock multiplier and voltage when the system isn't doing anything CPU intensive.

    Serious overclockers will disable C1E in the BIOS Setup because it can introduce instability.


    was C1E present on P4's?

    OP 200W PSU no it won't give you more performance but it might stop a horrible issue occurring.
  6. Intel Pentium 4 650 with HT & LGA775 has C1E.
  7. I was an AMD user during the P4 years (couldn't afford them), only got to Intel on C2D.
  8. popatim said:
    Not a bit. PSU has no impact on performance; it can only introduce instability.

    Though with just a 200w PSU you have no room to overclock or upgrade.


    so my video card overclocking issues will be resolved ???

    i cant get too much with the clocks i only got 590mhz core 480 memory 1480mhz shader

    9500gt 1GB ddr2
  9. For a GeForce 9500 GT 1GB DDR2 the minimum recommended power supply is one with a +12 Volt current rating of 18 Amps.

    If your power supply meets that requirement then you shouldn't have a problem with power.
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