Several things come to mind that you may want to check.
1. Install the latest video card drivers
2. There is an update for AMD FX processors and Win 7 that does improve performance. This is not installed by default and needs to be manually installed AFAIK.
3. Use the Core Temp application to see what the CPU core temps are while gaming for awhile. If your CPU is running too hot (close to 70C), it will throttle itself. Be sure to read core temps NOT CPU temp which is typically the thermister temp sensor mounted under the CPU socket which runs 10C-25C higher than the actual CPU core temps.
4. You can use some of the online benches to get an idea if your 8320 is producing similar results to other folks with the same hardware as there is a lot of database data for reference. Don't consider an unusually high score to be typical however.
5. If none of the above helps I'd manually set the CPU frequency to the default frequency and disable the following:
1. Turbo Core Tech (Turbo mode)
2. APM (power management)
4. Cool & Quiet
5. CPU Thermal Throttle - make sure the CPU fan is running at 100%
If the pics that I see online for your model mobo are the correct ones, it doesn't show any VRM circuit heat sink which could be an issue with an 8-core FX CPU under heavy load.
If your FPS still drop after the above checks then use some software to record your CPU frequency and vcore voltage such as OCCT or similar, while you play games. Check the recorded data to see if after 15+ minutes of video gaming the vcore drops to .875v and the frequency to 1400 MHz. If this happens then the VRM circuit on your mobo is overheating and throttling the CPU.
You'd need to add cooling to the VRM circuit to reduce or eliminate this problem which happens on many mobos with 8-core FX processors and stress testing or heavy video gaming. It takes awhile for the VRM circuit to overheat so it doesn't usually occur in the first 15 minutes unless you have a VRM circuit with minimal cooling.
Technical ignorance is NOT a destiny it is a choice. Do your homework so that you can make technically informed decisions and not be duped by advertising hype or mis-information stated as fact when its not.
09:25 PM by