60 and 65 degrees centigrade are OK when stressed.
Also, having V-sync on reduces power consumption and thus keeps the GPU cooler if the refresh rate of the monitor is lower than what the GPU is capable to draw. Having some overhead resources is a good thing but if you're concerned with your energy bill you may even want to underclock the GPU and lower the max refresh rate of the monitor! There's most likely no visual difference in 144 or 165 Hz compared to 180 and dropping the clock rates by some 5% should still give you plenty of headroom. Studies tell that underclocking by 5-10% can reduce power consumption by 20-30% so we're not talking about peanuts here. And it will keep your system cooler which adds to longevity.
Hello,
I just wanted to see how it would do uncorked. As you suggest, I'm going to keep things sensible at 120hz to preserve CPU and GPU. I don't think I can differentiate anything above 120hz anyways but it seems TrackIR is much smoother compared to the 60hz of my old monitor. I've also tried HDR on and in the off position and it seems nicer with it on, so I'll keep it that way. These settings also look perfectly good in the IL-2 module I have, Battle of Normandy.
I am still astonished at the difference between 1080p and 1440p, it's vast to me. Just the difference looking at non-gaming stuff is worth the upgrade.