GPU Throttling at low temps

[Dwarf Midget]

My gtx 760 2gb is throttling regularly when playing cpu and gpu intensive games such as GTA V or Battlefield 3. It can run these games smoothly at decent settings, but every now and then 60fps dips to about 20-30 for about 5 seconds, sometimes more. MSI Afterburner shows GPU Usage decreasing from around 96% to 60 odd in correlation with the throttling, along as VID usage dipping from 34 to 20s, all while at a temperature never exceeding 70 degrees - mostly always around 63-64.
CPU: AMD FX 8350
GPU: GTX 760 2GB
MOBO: ASUSTeK Computer INC. M5A78L-M/USB3 (AM3R2)
PSU: Corsair CX750

 

[popatim]

Monitor the cpu and gpu temps while this happens.
Its sounds like one of them is hitting the temp ceiling and throttling down to cool off.

 

[Dwarf Midget]

Monitor the cpu and gpu temps while this happens.
Its sounds like one of them is hitting the temp ceiling and throttling down to cool off.

CPU Temps are normally around 63 degrees and GPU temps are normally around 64 when throttling occurs, then the temps decrease to around 47, but if I'm not mistaken these are not anywhere near the temperature thresholds for a GPU or a CPU.

 

[Dwarf Midget]

Managed to solve the problem. My northbridge was getting too hot and throttling my CPU. Managed to fix it by improving airflow in my case and using AMD Cool 'n' Quiet and other cooling options from the BIOS.

 

[popatim]

I beleive the CPU would be throttling also at 63c, glad you got it sorted out though.