Alienware 17 r4 high gpu temperatures

So i just got my new alienware 17 with a gtx 1070 and an Intel i7-7700hq.the cpu temperatures are fine, under load they max out at around 70 degrees Celsius . my gpu on the other hand reaches into the high 80's and even until 90 degree Celsius . there has been no overclocking , im testing and playing on a flat surface and a repaste with IC Diamond has been done. very confused and out of ideas .