Nope that's a good temperature. Gpus can get up to 85-90C while gaming. And also those older cards, the 770,780/ti run hotter than the newer maxwell and well obv, pascal. 72 is a good temperature for a GPU. My 7970 hits around 79/80 during long periods of gaming. You want it less than 90C. That's when the GPU will thermal throttle and 100c it will shut itself down.