2 Replies Latest reply on Aug 12, 2011 10:41 PM by parsec

    i7 870 won't hit 3.6ghz in Turbo Mode when fully maxed running prime95?

    buffettck

      I'm running an i7 870 (no overclocking) on an Intel DP55KG motherboard.  Aren't these supposed to bump up from 2.93 to 3.6ghz when fully maxed out via Turbo Boost?  I've read in different places where this is true when running prime95.  My i7 870 goes to the rated 2.93ghz and stays there.

        • 1. Re: i7 870 won't hit 3.6ghz in Turbo Mode when fully maxed running prime95?
          Adolfo_Intel

          Keep in mind that Turbo Boost is used only by the operating system and the running applications, so those are the ones that determine when to use this feature, in this particular case I would suggest making sure that the Enhance Intel SpeedStep® Technology is disabled on the BIOS of the motherboard, since this feature will force the processor to run slower in order to save power consumption, the option on the BIOS is usually called “EIST” but if you have a third party motherboard and you cannot find the option , please contact the motherboard manufacturer for further assistance.

          Also install the latest BIOS version for your motherboard  if you have not done that yet.

          • 2. Re: i7 870 won't hit 3.6ghz in Turbo Mode when fully maxed running prime95?
            parsec

            What are you using to monitor the CPU frequency?  Some programs do not update that data fast enough, or just read it once and display it.  Turbo boost must also be enabled in the BIOS, you should check that it is.  You should see your CPU run at 3.6GHz at least some of the time depending upon what is creating the load, but you also need an appropriate program to monitor the CPU's frequency.