The Samsung UN40F6300 40" 1080p 120Hz LED TV features a 240 clear motion rate. TVs with this CMR can display action-packed movement with sharpness, clarity and contrast. Clear Motion Rate was developed to accurately measure how well an LCD or LED TV can depict fast-moving images. Previously, motion-clarity was calculated by the frame refresh rate alone. But CMR offers a more complete measure by calculating 3 factors: frame refresh rate, image processor speed and backlight technology.