Hello,
I just upgraded from an Nvidia Geforce 8600GT to an ATI Radeon HD 5670. With the 8600 in, I was able to use a 400w PSU perfectly well, but it can't run the new card, so I put in a 600w power supply.
The problem I now have is that ONLY while I'm gaming, the PC will shut down after 20 minutes of so without warning. I did some research online and most people expect it to be heat, but my computer worked perfectly well with the older graphics card and power supply in. Further more, I have gone as far as to opening the side panel of my pc and pointing a huge desktop fan to blow air directly into the machine, but with no change with the problem.
The last time I tested my machine I used an AMD gadget for windows 7 which can monitor CPU heat. I kept an eye on the temperature as I ran a game on full graphics (which my new graphics card can easily handle without strain) and the temperature of the CPU remained below 30 degrees celcius, which is well within it's safe operating limits.
As the graphics card and power supply are the only new additions, and no matter what I do to optimise the airflow, I get the same problem, I now strongly suspect that the power supply is to blame.
A few things don't make sense though... if the power supply was to blame, why would it only shut down during gaming? (surfing the net, watching movies etc doesn't cause it to shut down) and secondly, is there any other part of the machine that might be overheating, aside from the CPU that might cause the computer to shut down?
I should point out that my pc did overheat somewhat with the old graphics card in, but I would hear a warning sound coming from my pc, then promptly would open up the case to let it breath, and all would be well. This time I'm getting no warnings at all...
Is it possible that there are some settings that are making my machine shut down like that, that maybe I don't know about?
With all the evidence, what is the most likely culprit?
I just upgraded from an Nvidia Geforce 8600GT to an ATI Radeon HD 5670. With the 8600 in, I was able to use a 400w PSU perfectly well, but it can't run the new card, so I put in a 600w power supply.
The problem I now have is that ONLY while I'm gaming, the PC will shut down after 20 minutes of so without warning. I did some research online and most people expect it to be heat, but my computer worked perfectly well with the older graphics card and power supply in. Further more, I have gone as far as to opening the side panel of my pc and pointing a huge desktop fan to blow air directly into the machine, but with no change with the problem.
The last time I tested my machine I used an AMD gadget for windows 7 which can monitor CPU heat. I kept an eye on the temperature as I ran a game on full graphics (which my new graphics card can easily handle without strain) and the temperature of the CPU remained below 30 degrees celcius, which is well within it's safe operating limits.
As the graphics card and power supply are the only new additions, and no matter what I do to optimise the airflow, I get the same problem, I now strongly suspect that the power supply is to blame.
A few things don't make sense though... if the power supply was to blame, why would it only shut down during gaming? (surfing the net, watching movies etc doesn't cause it to shut down) and secondly, is there any other part of the machine that might be overheating, aside from the CPU that might cause the computer to shut down?
I should point out that my pc did overheat somewhat with the old graphics card in, but I would hear a warning sound coming from my pc, then promptly would open up the case to let it breath, and all would be well. This time I'm getting no warnings at all...
Is it possible that there are some settings that are making my machine shut down like that, that maybe I don't know about?
With all the evidence, what is the most likely culprit?