2nd Monitor and perf

In my current PC set up I have two monitors. the secondary I just use for browsing and reference documents occasional use etc... I used to use it in game but prefer not to now. From a perf point of view DCS pegs me at almost 100% CPU and GPU utilisation MB Memory and gfx card memory runs at about 50% utilisation in nearly all scenarios.

From a performance point of view is there any benefit in placing the 2nd monitor on the internal MB/CPU gfx adaptor ?

I welcome your data (if you have any) or suggested reading, thanks

Your data makes my eyes glaze over. I just don't pay attention to that. Second monitor is no performance hit at all.

Your data makes my eyes glaze over. I just don't pay attention to that. Second monitor is no performance hit at all.

yep having tried it no appreciable difference one way or the other :)

Is it really true?

Let's suppose a i9-9000k and a RTX 2080 Ti feeding an UHD monitor.

There won't be an impact for the performance if I will add another graphics card for feeding a HD monitor?

I think that this will use more CPU power which is needed for both graphics card.

i'm sure there is some impact, its just not very much (e.g. I couldn't tell) … now I suspect if I watch a video on it that's a whole different story... but, just being there with a static webpage no impact