Bad cpu?

so i upgraded my core i7 920 to a 940, now my pc keeps crashing, the video card a hd 5870 the fan goes on full speed and the vidoe goes off. after i restart the computer it boots fine. but it happen again sometimes it takes hours sometimes 2 minutes. the video card was working fine with the 920. all i can think of is that the PSU can't hadle the load of the faster cpu with the video card. as soon as i took the hd 5870 everything stated to work proper. i am using a old video card that does not need to be powerd by the PSU. what do you guys think? bad video card? PSU can't hadle it? cpu problems? motherboard perhaps? all was working fine untill i changed the cpu. i did run the 940 on prime95 for 4 hours no crash? with the old vidoe card.
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More about tomshardware
  1. Can you list your Mobo,chip, gfx card and psu's specs/model numbers for us please?
    :)
    Moto
  2. because the cpu was free!!!! when the 920 went bad intel sent a 940. anyway the psu is a rocketfish 550 watt. it came with the pc.
  3. Motopsychojdn said:
    Can you list your Mobo,chip, gfx card and psu's specs/model numbers for us please?
    :)
    Moto

    its a pegatron ipmtb-tk it came with the hp. psu is a rocketfish 550 watt it was in the pc when i oppened it to install the 940. the video card is a radeon hd 5870, chipset x58.
  4. It is very unlikely that your processor is bad, your power supply could be at fault but from the description you have given I would check the mounting of the heat sink and if you have a even spread of heatsink compound on the processor.
  5. i7 920 + gpu 5870 = 373w max draw. left for over hardware 59w.

    i7 940 + gpu 5870 = 408w max draw. left for over hardware 24w.

    the psu is not up to running your pc at full power
  6. ^^Yup, its the PSU, seems like it cant take the load and is shutting off to protect itself.
  7. Looks like new psu time man, :)
    Moto
  8. narwen said:
    i7 920 + gpu 5870 = 373w max draw. left for over hardware 59w.

    i7 940 + gpu 5870 = 408w max draw. left for over hardware 24w.

    the psu is not up to running your pc at full power



    yup deff.a psu problem. got tt 750 watt now everything id working perfect!
  9. Groovy, glad you got sorted man
    Moto
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