Question Intel Core i9-7900X Strange dual screen behaviour

May 23, 2019
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Noticed something recently when i play games on my dual monitor setup.

When running a game and not having anything else open, my CPU will have peak temperatures at about 73-75c

but if I run the same game with about 30 chrome tabs open, as long as i have a video running fullscreen on the 2nd monitor
my peak temperatures drop to 65-67c.

have tested this several times, if i pause the video the temperatures climb, but when i start the video again they drop back down...

anybody else seen anything similar?
 
May 23, 2019
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This is caused by a decreased framerate on your game, there is a weird synchronisation of your framerate ingame and your video framerate when you watch a video on your second screen
 
May 23, 2019
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My framerate is still the same in both instances, never drops below 60.

My main monitor is 100 Hz and my 2nd monitor is 144 Hz, if that means anything.