Few computing programs require more system resources than games. Game developers consistently push graphics hardware to their limits. Because of this, the results are frequently less than desirable.
Sometimes, when your GPU/graphics card and monitor are out of sync, and the GPU sends a frame in the middle of a monitor’s refresh rate, the monitor ends up drawing parts of multiple frames on the display at the same time.
This can result in visually discernable artifacts known as “tears,” or tearing; a form of distortion where objects on the screen appear to be out of alignment.
You can keep your GPU and monitor in sync by enabling vsync, which causes the GPU to send frames to the screen in sync with the monitor’s refresh rate (usually at 60Hz, or 60 times per second). However, while maintaining sync via vsync eliminates tearing, it can introduce yet another artifact called “stuttering,” as well as input lag.
news is that Nvidia’s G-Sync monitor technology eliminates the tear, stutter, and input lag phenomena that plagues many PCs.
Read the entire review at Digital Trends.