Sudden poor performance after 1 hour of gaming. Fixed if no power.

After playing for about 45 minutes to 75 minutes, the PC has a sudden poor performance. The FPS is low, and after quitting the game, the PC has trouble doing basic functions. The response time is very slow and even the internet barely works. I restarted but nothing happened. I thought it was a software problem so I re-installed windows. Nothing happened. I opened the case and checked to see if anything was loose. I started the PC and it worked fine. After 40 minutes of Battlefield, the same problem occurred, I turned off the computer and then completely disconnected it from the power source. No electricity was running through the system, I started the PC and it worked fine. However, the problem came back after another hour of gaming. The PC doesn't go into this state if it is used for internet or any other thing that doesn't put the PC through stress. What is happening and how can I fix it? (I checked the CPU temperature and it stays at an average of 40-50 degrees after 10 minutes of gaming)

My specs:

CPU: AMD FX-4100 Quad-Core Processor
RAM: 8 gigabytes
GPU: AMD Radeon 6950 2gb
13 answers Last reply
More about sudden poor performance hour gaming fixed power
  1. What is your power supply? This is strange behavior and I would predict the PSU as the most likely culprit.

    Are your CPU & GPU temps OK while gaming?
  2. BigMack70 said:
    What is your power supply? This is strange behavior and I would predict the PSU as the most likely culprit.

    Are your CPU & GPU temps OK while gaming?


    I have a 700 Watts PSU and when I build my system at Cyberpowerpc.com, it said that my customization needed at least 400 watts. So, unless they are wrong, it is not the PSU. I did a temperature test on the GPU and CPU after you answered the question. I played Battlefield 2 on max Settings for 20 minutes. The average CPU temperature was 45 degrees and the average GPU temperature was 75 degrees (It never went up 80). The temperature was stable and it did not increase with time. Unless I am wrong, I do not think the temperatures were too high.
  3. What is the brand and model of that PSU. Cheap PSU's often lie about what they can actually handle.
  4. Your customization definitely does not need 400W. Much more than that.

    And I would like to see what the power supply is as well. The temperatures on my 6950/6970 run at about that, given I am in a case that has close to 0 airflow.
  5. bystander said:
    What is the brand and model of that PSU. Cheap PSU's often lie about what they can actually handle.


    700 Watts - Standard Power Supply - SLI/CrossFireX Ready
  6. Tonialb007 said:
    700 Watts - Standard Power Supply - SLI/CrossFireX Ready


    Please answer the whole question. What is the brand of the PSU?
  7. The brand of the PSU is important. I have a 680W PSU in a corner of my computer room that puts out no more than 375W.
  8. Deemo13 said:
    The brand of the PSU is important. I have a 680W PSU in a corner of my computer room that puts out no more than 375W.


    http://www.cyberpowerpc.com/spec/getspec.aspx?n=POWERSUPPLY&v=700%20Watts%20-%20Standard%20Power%20Supply%20-%20SLI%2FCrossFireX%20Ready

    The brand is xtreme gear
  9. Quote:
    hello you should make post in other forum section, i believe the one where stands new build.
    also paying 100 euro for card on your computer is probably waste of money. save some more and once you get 700+bucks you can buy entire set, ram/cpu/motherboard/graphic card

    Homebuilt Systems->New Build

    @Tonialb007: what about to dust off your computer mainly on graphic card fan, this could be causing the performance problems beside psu

    best
    revro



    My PC is new, only two months. When I opened it after the performance drop, I did dust it off.
  10. Tonialb007 said:

    http://www.cyberpowerpc.com/forum/forum_posts.asp?TID=19111
    http://www.exiledservers.net/archive/index.php/t-5034.html
    http://www.techpowerup.com/forums/showthread.php?t=149991

    Because it's such an off brand, it's hard to get professional reviews, but every link I found about that brands PSU, have given very bad reviews of it. Some were getting crashes when trying to game with them.

    Even if the PSU is not your problem, you should replace that PSU as soon as you can. A bad PSU can damage parts.
  11. Your PSU is lousy... I'd recommend replacing it with something like a Corsair TX650 or better.
  12. That is a very very lousy PSU. Replace is when funds allow.
  13. Deemo13 said:
    That is a very very lousy PSU. Replace is when funds allow.


    Is that the reason of the problems I am experiencing?
  14. I certainly is a strong possibility. The PSU heats up and stops providing the AMPs needed, and the cards throttle down and you lose performance. Of course it's not the only possibility.
  15. Even if its not, its better to have a good power supply.
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