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Scan Lines/Screen Tearing in Games w/ VSync on & Varying Clock Speeds on GeForce GTX 780

Tags:
  • Geforce
  • Games
  • Screen tearing
  • Graphics
  • Gtx
  • Vertical synch
  • Graphics Cards
Last response: in Graphics & Displays
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December 15, 2013 12:32:52 PM

Hello, I have been having problems with my graphics card. My graphics card is an EVGA Geforce GTX 780 SuperClocked with ACX cooling. One of the first problems I have to note is a horizontal warp line or tear in the screen, just below the middle of the screen. It appears when I, in videogames for example, look up and down. Moving the camera vertically like this causes the line to appear, and it moves slightly in correlation with my camera movements, as if scanning the screen. It does not set in right away. After, say, half an hour of gaming, I could look up and the line will cut in. If I turn VSync off, it goes away, only to come back shortly after. I have tried using an HDTV instead via HDMI, to no avail. I have also tried forcing VSync on though Nvidia Control Panel.
Another problem I've noticed is when running Furmark, I can see that my clock speeds drop below the base clock after a few minutes of running. My card is set at the default clock speeds for the Superclocked card, which is (Base: 967MHz) (Boost: 1020MHz). I've recorded it dropping as low as 920MHz. I have checked my card using things like GPU-Z, and it says that the clock speeds are indeed set at 967 and 1020. Does anyone have a solution? It is with EVGA as mentioned, and I have heard a lot of good reviews about their RMA's, and I am considering just sending it back for a replacement. Would this be my best option? Thank you! System Specs below.

CPU: Intel Core i7 4770k at stock 3.5GHz
MOBO: ASUS ROG Maximus VI Hero
RAM: G.Skill 16GB (2x8GB) Ripjaws @ 1600MHz
PSU: 760W Corsair AX Series
Case: CM Storm Trooper
Boot Drive: Intel 530 250GB SSD
GPU: EVGA Geforce GTX 780 SC w/ ACX

More about : scan lines screen tearing games vsync varying clock speeds geforce gtx 780

December 15, 2013 12:38:19 PM

That's normal for a high powered card. What you need to do is make sure that VSYNC is enabled as that will minimize or stop screen tearing.

The frequency is based on temperature so if it gets hotter, and FurMark will make it run hotter, it will lower the frequency in order to maintain a maximum temperature.

During gaming, you wont notice this much as most games don't push GPUs to their max temp.
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December 15, 2013 12:42:55 PM

jimmysmitty said:
That's normal for a high powered card. What you need to do is make sure that VSYNC is enabled as that will minimize or stop screen tearing.

The frequency is based on temperature so if it gets hotter, and FurMark will make it run hotter, it will lower the frequency in order to maintain a maximum temperature.

During gaming, you wont notice this much as most games don't push GPUs to their max temp.


I have watched the temps and they have never gone over 65 degrees in Furmark. 55 degrees under gaming.
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