Fps drops and driver crash with a Nvidia GTX 780

Hi, I just registered to this forum because I have a problem with my new Asus gtx 780 dcu2 (bought one week ago). Currently the pc is new and I only have 3 games, Assetto Corsa, Tomb Raider (2013) and Payday 2, but I am having problems with all 3 games.
With Assetto Corsa in the middle of the game, randomly the video driver crashes and windows says it was recovered successfully, error id 14. With Tomb Raider also when I am playing the game closes itself and doesn't give any error. With Payday 2 instead I have 2 issues that happen randomly and can happen all in one game session, 1) the game blocks for 1-2 sec and I have an fps drop but shortly after the frames go back up as normal, 2) the screen goes black and then goes back on and I can continue to play or the screen goes black and the driver crashes like with Assetto Corsa.
I tried downgrading the nvidia driver from 335.23 to 331.82 but I have the same problems, also I did a memtest for 1 hour and didn't found any error, and did an OCCT gpu test and I could replicate the fps drop I have on Payday 2, here are the graphs generated by OCCT in 3 tests.



Also did another test using gpu-z while playing Payday 2, and I found that every time I have an fps drop resulting in a lag of about 1 sec the 12v goes down to -2.50 v. I don't know if it's a bug with gpu-z or actually my psu isn't delivering constant 12v. Here is a screenshot of gpu-z shortly after I had an fps drop where you can see in the graph of the 12v that it went down to -2.50 v. I also don't think that -376.500 v is correct in the VDDC so maybe is the program that has a bug. I can upload the log if it is needed.



This is my rig:

PSU: XFX Pro Series 650W
CPU: Intel i7-4770
RAM: DDR3 Corsair Vengeance Blue Low Profile CML8GX3M2A1600C9B 1600MHz 8GB (2x4GB) CL9
GPU: Asus GTX780-DC2OC-3GD5
SSD: Samsung 840 EVO 120 GB
Motherboard: AsRock Fatal1ty H87 Performance
HDD: Western Digital Caviar Blue 1tb

I have never done OC and all the games are installed on the HDD. The temps while gaming are CPU 45-50°C and GPU 60-65°C. Also I tried the games with and without v-sync and the problems persist. Can someone help me solve these problems? I have them since the first day I bought the gtx 780 and still don't understand if it's a software problem or hardware. Thanks to anyone who can help
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More about fps drops driver crash nvidia gtx 780
  1. Do you have the latest BIOS and mobo drivers? and the latest GPU drivers?
  2. Tradesman1 said:
    Do you have the latest BIOS and mobo drivers? and the latest GPU drivers?


    Yes all drivers are updated, and I also tried downgrading the gpu drivers to an older version (331.82) but the problems persist.
  3. Often, PSU may fall in, but yours should be plenty, might see if you could borrow another one to test with
  4. I'm having Completely the same problem, same PC parts only for The PSU, mine is 860w PSU.

    Really looking for solutions.
  5. I managed to solve all the problems, switched the card to another PCI-e slot and now it is working perfectly, unfortunately I only have 1 PCI-e 3.0 slot so now the card is working at 2.0. Now my question is, is there something to set in the bios if I use the 3.0 slot, or the slot is damaged? Cause I would RMA the mobo but if the shop where I bought it from doesn't find anything wrong they would make me pay a fee so I would like to be sure that the mobo is damaged before sending it back.
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