Hi All,
 
I'm having a problem which i'm having extreme difficulty in diagnosing. I've bought a GTX660 SC 3GB from EVGA and it was working ok for a couple of months. I then bought a new motherboard+cpu to further upgrade my computer.  My spec is:

MoBo: ASUS Z97-a
CPU: Intel i5 4670K
RAM: 8GB (2x4GB) Corsair Vengeance*
GPU: EVGA GTX660 SC 3GB (however Speccy says its 2047 MB?)
PSU: 600W 
 
In typing this, I've noticed that my RAM is saying its @666MHz, however through bios it says it is 1333MHz, could this be one thing thats causing this?  Never mind I searched and found i had to double it.

I've already had an RMA on this card due to it not showing display when i boot up, which after getting a card back, i noticed that due to bios set as performance mode was causing it to not work. Setting everything back to default it worked fine. However after a little while i'm now getting more issues such as extreme FPS drop and freezing to blackscreens and display drivers stopping.
Example of frame drop would be: Playing FF14 on Desktop (high) with no changes is a solid 60FPS but now it barely gets 20.


I've tried a number of things from this website as a solution and i thought i cracked it, but the next day the issues returned. I'm currently on a previous driver 337.88, I've ran GPU-Z while playing and my card gets to about 70C on heavy load. 
 
Any help would be extremely appreciated.

mojman2001
Do u have the latest drivers for your motherboard? When installing graphic drivers did u do custome install only download gpu drivers an physical drivers only?

I've been to the ASUS website and downloaded the most up to date drivers i could find, i've also updated the BIOS. I've also done the clean install of only doing the Graphics and PhysX drivers for the version i've specified.

Welcome to the forums..Uninstall EVGA Precision X/X 15, MSI Afterburner, Asus GPU Tweak or similar other utilities choosing not to save settings when prompted, then clean install the graphics driver and PhysX again..Uninstall AI Suite 3 if you have it and then clear CMOS with the jumper with the battery removed as described on page 1-23 of your mobo manual to reset factory defaults, make any custom BIOS changes needed upon startup (don't forget date/time), clean up the leftover/unused registry entries with CCleaner and go from there..Make sure the CPU isn't overheating.
 
Just a few thoughts.