I'm using GPU rendering for a year, but now a realised that my 980Ti is using half of GPU clock core and GPU memory. I mean exacly half. Is everything correct? I did a test with 2,79 and 2,80 version and everywhere i have half of the power (eevee and cycles GPU) in every scene. I also have problems with rendering using GPU+CPU because i can't find right tile size to have better results than with only GPU. I have i7 4770.
Do you recomend some test for the graphic card? Or maybe for whole hardware?