Loud Fan Noise (Alienware R5 Aurora Desktop)

Hi I have recently purchased an Alienware Aurora R5 Desktop for gaming.

It has 1070 GTX graphics, 32 GB RAM and i7 CPU.

The PC itself is great and if I play movies/music or do internet surfing it is very quiet.

But if I try to do any games with it the fan noise becomes unbearably high... almost like an aircraft taking off.

I have updated my BIOS and DELL technician has replaced all the fans inside PC but they don't help at all.

Isn't there any way you can help me? Thank you in advance!!

-Peter-