coil whine in a new gpu

[pro2legendary]

i got the 1070 strix 2 days ago and i benchmarked it using ungine vally 1.0 at ultra no aa 3 times 1st time was at 1280x720 by mistake.. 2nd was 1080p with ultra and aa 3rd was 1080 ultra no aa and after the 3rd one was done cause the sound was so high from the program it self i didnt hear the coil whine after it was finished i muted the sound and heard this high pitched squeeling sound from the gpu !!!! for like a second idk if it was and i didnt hear it. . should i be worried or is that fine for benchmarking

 

[Chugalug_]

For benchmarking that is very typical, it pushes the GPU to its absolute max, resulting in coil whine when the fans are running at unusually high speeds.
Regularly, it shouldn't go very high, don't worry, that card has a very good cooler.