I am experiencing huge disappointment with Precision R7910. The fan speed goes insane if I install other than factory supplied GPU (I installed Titan X Pascal). The workstation is nicely quiet with only onboard GPU. I would compare it to industrial vacuum cleaner with slight hints of jet engine. The same behavior was described here:
We are building a prototype of specialized HW testbench, where there are several devices mounted in a rack (one of them should be R7910) and this rack is used in office environment by our testers. I could maybe understand this level of noise in a server computer but as we purchased WORKstation... Sorry this is unacceptable! If the issue is not resolved, this is a showstopper for us, we will look for some other rackmount PC vendor. These noise levels are not tolerable in an office.
Telephone support did not help me, this is my desperate call for help, hope that somebody competent from Dell will read it and find me a way how to make the fans with non-original GPU quiet again (using these magical IPMI commands maybe..?)