It will definitely assist in faster rendering with it's 1800 or so Cuda cores (Than your listed card) and 8 gb isnt to bad for most scenes. One thing to consider is that it is more than double the price of the more powerful and more recent RTX2060.So value for price isn't so great, if being used mainly for Iray rendering.

https://gpu.userbenchmark.com/Compare/Nvidia-RTX-2060-vs-Nvidia-Quadro-P4000/4034vsm250990