Core i7 930 FATAL ERROR in Prime95 on one of my cores

I have a Core i7 930 overclocked to 3.8Ghz on the 1.3vcore

I have hyperthreading disabled, I ran prime95 a couple of days ago, and today aswell. I get this fatal error in 1 core everytime I stress test it.
Also the temps seem quite hot with hyperthreading off aswell..:(


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Please help :(
11 answers Last reply
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  1. Hello,

    You probably reached your limit of your CPU's OC'ing ability. I would downclock it until it doesn't give you the error (or if you keep getting the error, your CPU might be on its way out).

    CPU's can be vastly different (even with the "same models"). Some are able to OC superbly without much effort, and well others will not.

    Are you using the stock HSF? If so you will need something like the Hyper 212+ to cool off your CPU better.
  2. Like Chainzsaw mentioned, you have the CPU over its limit and if you're already concerned about heat then instead of increasing the voltage just clock down the CPU. I usually get this same error when i need to clock down or raise the core voltage.
  3. ok, thankyou :)

    I will probably end up buying a new ivy-bridge core i5 processor anyway
    my i7 930 is running way too hot for a low voltage.
  4. What type of CPU cooler are you using? I have the same case and the airflow in it is nice provided you put a fan or two up front to balance the intake/exhaust of air. However if you're using a stock cooler and overclocking that will always cause heat problems. You have a nice processor don't scrap it over heat cause this can be solved!
  5. I have the corsair H50 cooler.

    I have a feeling it is my CPU
    I can't get any clocks over 3.6Ghz
    and it used to run much cooler, but now it runs so hot.
  6. matt2155 said:
    I have the corsair H50 cooler.

    I have a feeling it is my CPU
    I can't get any clocks over 3.6Ghz
    and it used to run much cooler, but now it runs so hot.



    What type of thermal compound did you use when you installed the cooler? Also how long have you had the CPU and how long have you had it overclocked?
  7. stickg1 said:
    What type of thermal compound did you use when you installed the cooler? Also how long have you had the CPU and how long have you had it overclocked?


    I have the Noctua thermal compound that the Noctua NH-D14 usually comes with.

    I re applyed it a week ago aswell.

    I have had it overclocked for about 2 years now, I even had problems overclocking it over 3.6 when it was brand new
  8. Well typically you want your thermal grease to settle for 200 hours or so at a reasonable temp for optimum performance. But as Chainzsaw mentioned at first, you could very well be at toward the end of your CPUs lifespan.
  9. Are you sure 1.3V is enough to run 3.8GHz? One core failing and the rest still running usually means insufficient Vcore. I would try increasing the Vcore in small increments. Even if you had an i7 920 D0 revision which is supposed to be the king of the i7's for overclocking with low voltage, I would think 1.3V is borderline enough to run prime95 with no errors. I recall having to run my old i7 920 with a Vcore of 1.325 in order to hit 4.0GHz and run prime 95 with no errors and it was a D0 revision. Even with the antec620 cooler, I still hit 80'ish degrees. That is with hyperthreading on. I have been told turning off hyperthreading reduces temps and Vcore needed but I have tried that and I really didn't notice that much of a difference.
  10. stickg1 said:
    Well typically you want your thermal grease to settle for 200 hours or so at a reasonable temp for optimum performance. But as Chainzsaw mentioned at first, you could very well be at toward the end of your CPUs lifespan.


    Well, I always keep the computer on, because I watch movies and fall asleep so it has been on for atleast 350 hours overclocked.
  11. I'm not convinced 1.3v is enough. But regardless, with your temperatures It probably wouldn't be wise to push it much further.
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