For a while, whenever i play a graphically intensive game, The computer just shuts down unexpectedly, with no warning.

These are my specs:

  • Intel Quad Core Q6600
  • AMD Sapphire R9
  • 500 watts power supply
  • windows 7

I have installed the new AMD Sapphire R9 recently, and after that, the computer shuts down.

The GPU and CPU temps are relatively low before it shuts down, BUT after a few minutes of going full screen on ULTRA. It shuts down.

Could anyone help about what the culprit is?

(i have suspicions on the power supply, since i put in a new graphics card on a 6 year+ old machine.)

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  • Graphics cards use a lot of juice, so it may well be the PSU is not man enough for the job. – Majenko Oct 26 '14 at 22:53
  • Please provide us the PSU requirements for your graphics card. – Ramhound Oct 26 '14 at 22:59
  • It might help if you didn't run it in Ultra mode, the rest of your computer's specifications, are to blame for the poor performance and using a more liberal setting might help. – Ramhound Oct 26 '14 at 23:07

If you'd looked at the system requirements (printed on the box, and on the manufacturer's website) you'd see this little line there:

  • 750 Watt Power Supply is required.

So I'd upgrade that measly little 500W PSU into at least a 750W one as your first port of call.

  • thanks for the information! ill see if it will work! – Csharper Oct 26 '14 at 23:32
  • Agreed, the original Core2Duo's were fairly power hungry, and a decent Q6600 system was getting close to marginal with 500w back then. With an R9 sucking even more juice, and no doubt a PSU the same age as the CPU (so 5 years worth of capacity wear), the PSU is the likely culprit – Jon Story Oct 26 '14 at 23:34
  • @Csharper so, did you test with new PSU? – Haplo Oct 27 '14 at 20:47
  • @Haplo Yes, The culprit for the old PSU was a high fluctuation of volts. It wasn't consitent. THANKS! (Sorry for being late) – Csharper Jan 26 '15 at 2:19

I had exact same problem back a while ago. Computer was shutting down when i was playing games. I suspected it is from the heat. So, i got myself a 3 fan cooler and problem was solved. I think yours the same since it is happening after the installation of graphic card.

Edit: Was using single fan 6850.

  • Sudden shutdowns like that are invariably from one of two causes; over-heat or under-power. I think in this case, under-power was more likely. – Tetsujin Oct 27 '14 at 20:40

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