Inconsistent performance from Gigabyte 760GTX OC

[KevinMHC]

The 760 worked for 8 months until it started acting weird. Every time I restart, the card feels like its throttled differently. Using Diablo 3 framerates as measurement, sometimes I will get capped at 30fps, sometimes 60fps sometimes back to normal at 140fps in town.


The drop in performance is also visible on the desktop. Explorer Windows and Browsers will render slower and frame drops when moving around the desktop


The weirdest part is that I do not get any BSOD or game crashes, it simply just feels like the computer is being throttled differently everytime I restart the computer.


CPU Z and GPU Z all reads the computer and GPU to be running at normal factory frequency. So I can't even tell where the throttle is happening.




Things I have tried:
- re-install video drivers
- re-install Windows
- Reflash Bios
- RMA'd GPU (gigabyte sent back the SAME CARD and said no errors found)
- Set back to Stock speed, Overclocked and Underclocked CPU/GPU
- Set Windows power setting to High performance
- Set Nvidia drivers to high performance preferred
- disabled Speed Step/ Intel turbo boost
- blow out dust and re-seated the GPU
- Re-seated the rams
- Unpacked all cores




I am seriously out of ideas at this point. I looked around and it seems that there is alot of GIGABYTE 770s exhibiting this problem too. I'm pretty convinced this is a gigabyte issue.
The temporary fix right now is to seriously just keep rebooting the computer until I get back to normal performance.

My rig:
i7 4770K
Gigabyte z87x-d3h
Crucial 16gb @ 1600mhz
Corsair 750 PSU
Gigabyte Winforce 760 GTX OC 2gb
SSD+ 2 HDD
Dual monitors 27" and 23" vertical

[profJim]

Re: Inconsistent performance from Gigabyte 760GTX OC

Welcome to the forum.

1. Did you make any hardware or software changes changes to your system shortly before the erratic video performance started?
2. What is the model name of your Corsair power supply? How old is your power supply.
3. Have you tried running with your video card in the PCIEX8 slot to see if the problems are the same?
4. Did you test with the OC Guru utility removed from your system?
5. Did you test with MSI Afterburner installed and running on your system?
6. Did you try running with only one monitor connected to your system?
7. What are the screen resolutions for each of your monitors?
8. What type of video cables are used for both monitors.
9. Can you test your video card in another system?
10. Which operating system are you running?
11. Have you run the windows Resource Monitor to make sure that cpu utilization is reasonable?

You should also run HWiNFO64 and enable logging so that you can review voltages and temperatures in your system to see if there is anything wrong.

MSI AfterBurner has excellent session logging where you can later look at all the logged results graphs.

MSI Afterburner Download
AfterBurner User Manual Download (pdf)