Computer Crashes on 144FPS

[Cube_of_Rubik]

I own a 2-year-old computer sporting and Intel Core i3-4350 processor, 8GB of RAM, an NVIDIA GeForce GTX 750 Ti graphics card with 2GB of memory, and a 430W power supply. Recently, I bought a monitor with 144hz refresh rate, and started playing games at 144 FPS. The problem is that when I play games, the computer shows red artifacts on the screen, then restarts on its own. According to related posts on the internet, the issue seems to be a problem with either the graphics card, motherboard or power supply. However, the only suggestion they provided was to buy new components, which I do not have the budget for. So, I started playing games at 60 FPS again, and after this, my computer no longer crashed. Even so, I fell in love with the smoothness of playing games at 144 FPS, and I hope to be able to play games again at 144 FPS without the computer crashing. Any suggestions?

 

[RCFProd]

Higher framerate equals more heat on the GPU. How are your graphics cards temperatures when you're running Overwatch at 144 fps?

 

[Mareczek99]

Red artifacts are mostly common during GPU overheating. Sounds like an overheating issue or a CPU, GPU instability. Did You OC any of Your PC's components? How is Your 750ti cooled, passively, actively?

 

[Zerk2012]

I would say pushing your video card to hard and not getting enough power from the motherboard if you have the 750ti with out a 6 pin power connector.

 

[Cube_of_Rubik]

Higher framerate equals more heat on the GPU. How are your graphics cards temperatures when you're running Overwatch at 144 fps?

The temperature of the graphics card escalates up to 72°C.

 

[Cube_of_Rubik]

Red artifacts are mostly common during GPU overheating. Sounds like an overheating issue or a CPU, GPU instability. Did You OC any of Your PC's components? How is Your 750ti cooled, passively, actively?

I have never overclocked my computer. Also, I am not sure whether my graphics card is cooled passively or actively. All I know is that the fans of the graphics card spin when the computer is on.

 

[Cube_of_Rubik]

I would say pushing your video card to hard and not getting enough power from the motherboard if you have the 750ti with out a 6 pin power connector.

If I may ask, what do you suggest I do to fix this?

 

[Mareczek99]

Try checking the GPU's 6 pin power connector, if is properly connected, as zerk2012 suggested. 72 degrees is kind of high. Don't recall my 750ti 2GB reaching that high. You may try to clean it's heatsink with some canned air. It it's clean try downloading msi afterburber. Other than OCing tools it has some clear GPU monitoring tools. Try to recreate the issue while observing the charts. See if any value spikes before crashing down. To me, it sounds like a overheating or undervolting issue but the second might be pretty rare for a non OCed card.