Strange issue with CPU or Motherboard

Jun 11, 2014
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  1. Hello All,

    I am having a bit of a strange issue that I have never run into before. Yesterday after getting home from the store, I booted up my PC and started to play a game, although I noticed that I was getting framerate stuttering. It seemed to keep dropping a lot throughout my play. So I started taking a look at some of my sensor utilities. When I opened Asus Probe II, I noticed that it was telling me that one of my chassis fans weren't running. Okay, no problem it must have gone bad. I than took at look at the frequency and noticed that my AMD FX-8320 was only running at 1.5 GHz per core. I also checked CPUZ and had the same results. So I booted to the bios just to take a look and noticed that it show my Chassis fan WAS running fine and that my frequency was at 3.5 GHz per core as it should. So I though that it must be a fluke. Booted back into windows and again same issues. So I shutdown and took the side off my case which is also where the Chassis fan it said was running is located. Turned the computer back on and noticed the fan was running fine. I logged into windows and noticed that 30 seconds after windows logs in that one chassis fan turns off and the CPU underclocks to 1.5 GHz (217*7 multiplier). All 7 of the other fans in my case still running perfectly. GPU running fine, 6 HDD's running fine. Could it be possible that Asus probe II itself is underclocking my CPU. If so, what would be causing the fan to shut off. My first thought was power-supply, but I have no issues when stressing my hardware even in this state. I am an IT consultant but have not run into this issue before. Any help would be greatly appreciated.

    PC Specs-

    ASUS m5a97 r2.0 Motherboard
    AMD FX-8320 CPU
    CoolerMaster HYPER N520 CPU Cooler
    Kingston HyperX Blu 8GB (x2)
    Galaxy Geforce GTX 660Ti OC
    750w PowerSupply
    Cougar Evolution Full Tower Case
    Samsung 840 128gb SSD

    Let me know if you need any other information
  2. hellokitty[hk]

    hellokitty[hk] Hello, nice to meet you! Posts: 3,424   +142

    CPU temperature too high?
  3. DJMIKE25

    DJMIKE25 TS Member Topic Starter Posts: 78   +22

    38c idle before yesterday and 52c on load.

    With the frequency underclocked im idleing at 30c.
    Last edited by a moderator: Jun 11, 2014
  4. hellokitty[hk]

    hellokitty[hk] Hello, nice to meet you! Posts: 3,424   +142

    If you disconnect that fan does it throttle regardless of temperature? It's probably just safety catch. You can try switching that fan with another fan.
  5. DJMIKE25

    DJMIKE25 TS Member Topic Starter Posts: 78   +22

    I didn't have enough time last night to do much testing but I will try when I return home from work. I have a couple of extras.

    I've got 7 120's in there though so its strange that the 1 would cause throttling.
    Last edited by a moderator: Jun 11, 2014
  6. DJMIKE25

    DJMIKE25 TS Member Topic Starter Posts: 78   +22

    It looks like it was my Asus motherboard utility that was causing the issue. Everything is working fine after uninstalling.
  7. Ruben Santos

    Ruben Santos TS Rookie

    I have the same problem. I locked my CPU at 3,5GHz and when I open CPUz it appears 1,5ghz /3,7ghz always changing.. What can I do? My motherboard is a M5A99FX PRO R2.0, my CPU is AMD 8320 FX and my graphic card is a Radeon 270X 2GB. Please help me.
  8. DJMIKE25

    DJMIKE25 TS Member Topic Starter Posts: 78   +22

    I was able to fix the issue by completely uninstalling the AI suite. After my next restart everything was back to normal.
  9. Ruben Santos

    Ruben Santos TS Rookie

    I did not install the Al suite and my CPU still goes crazy. My BIOS is updated, I realy don't know what is happening.

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