If your CPU is not OC and got default setting it might be it. I personnaly run a delided i7 6700K at 4GHz at max 1.15 V (noctua l9i) with a 1080 Ti mini runing at 1980 MHz (with an Eiswolf AIO watercooling system going out from my S4M, with 2 fans, 12V water pump, 1 HDD, 1 SSD, 1 M.2) ... and...