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Odd clock speed issue

I recently purchased a new computer. Specs are:
Win7 Ultimate 64b
Intel i5 2500k
ECS P67H2-A3 mobo
GTX 570 OC
4GB DDR3 1333 ram
Silverstone Strider 750w

Anyway, I was interested in running some benchmarks to see how my computer compared to averages etc. So I ran 3D Mark 2011 first, and I quickly noticed some big discrepancies. First of all I thought the FPS I was getting in some of the tests was a little odd, but then I compared it to others. And there's a significant difference. Here's the benchmark
http://3dmark.com/3dm11/2371441

I also tried running PassMark Performance Test as an alternative benchmark. Their average score for an i5 2500k is 7470. I ran the test and got 4354.

For some reason my CPU is clocked at 2097mhz instead of the 3300mhz stock speed that it should be... and I have no clue why. If I go into my BIOS and CPU Configuration it tells me Processor Speed: 2100mhz. Same thing in Control Panel > System. DXDiag says - Processor: Intel(R) Core(TM) i5-2500K CPU @ 3.30GHz (4 CPUs), ~2.1GHz

What I've noticed from running CPU-Z alongside a Benchmark is that the Multiplier won't go above x21. It should go to like x33 for a non-overclocked i5 2500k.

So, is it somehow under-clocked, or just plain faulty?
10 answers Last reply Best Answer
More about clock speed issue
  1. boot into bios and change it to 33?
  2. If you are checking on idle then then Intel speed step if enabled will down clock it. On load it should increase the multiplier.
  3. rolli59 said:
    If you are checking on idle then then Intel speed step if enabled will down clock it. On load it should increase the multiplier.


    No, idle multiplier is x16 as normal. Core speed is 1598 mhz which I believe is also normal. The problem is on load the Multiplier increases to x21 instead of the x33 it should be going to; leaving me with 2097 mhz instead of roughly 3300 mhz.

    Here's a picture of this Intel program I just ran as an illustration... http://i.imgur.com/NZnFr.png

    And I'm about to try the BIOS thing in a minute. Will report back with results.
  4. Thermal throttling? The heatsink incorrectly attached!
    Eps power connector properly installed.
  5. The CPU is at low temperatures even during benchmarks etc. Hits about 47C max at full load.

    Anyway I just tried entering the BIOS to see if I could just adjust the clock speed... and even though my MOBO manual sitting here tells me I can adjust it, I clearly cannot, as the CPU Clock speeds and so on are listed but also greyed out so I cannot select them. I can change the voltages, disable speedstep and turbo and so on, but not core clock speed.
  6. You should have a function in there that takes it from auto to manual! It should enable the grayed out boxes, it might be an overclocking setting.
  7. I installed some Chipset software for the MOBO earlier and I thought that was all the software I needed. I just looked again 10m or so ago and found some Intel Management Engine Components... installed it, rebooted and now it's reporting speed at 3.39 ghz and 100 mhz system bus. So all good, fixed :P Sorry for the fuss but at least it's resolved.
  8. Great news!
  9. Best answer
    Vire70 said:
    I installed some Chipset software for the MOBO earlier and I thought that was all the software I needed. I just looked again 10m or so ago and found some Intel Management Engine Components... installed it, rebooted and now it's reporting speed at 3.39 ghz and 100 mhz system bus. So all good, fixed :P Sorry for the fuss but at least it's resolved.

    next time remember to make sure you installed everything :na:
  10. Best answer selected by Vire70.
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