Blue (and others) framerate capping is a must with modern GPUs. Otherwise they just run wild when they aren't heavily loaded. I had issues on my 3080 with older games. Like L4D2 and KF2. The card would shoot up to 250 fps, causing visual glitches when it would occasionally dip down to half that because of some map glitch, and the card was needlessly running hot.
Your brain notices fps CHANGES more than anything, assuming you're not lagging at low fps. What you want to try to achieve is a steady and consistent fps. It makes for a much more pleasant game. That's why Gamer's Nexus makes a big deal about 1% lows in their benchmarks, THOSE you notice, even if your average fps is high. It's one reason you're starting to see most modern games installed with a framerate cap already enabled.
I would recommend using the Nvidia control panel's global 3D settings to cap the frame rate to your monitor's refresh rate, as a start (there is just no reason to render more frames than the monitor can display, as the drivers or the monitor will just throw some away, and that can also cause visual glitches), then for best visuals cap the framerate, per game, (using the game's framerate limiter, or the Nvidia control panel) to 10 fps BELOW the refresh rate of the monitor, so it never forces the monitor to drop a frame. Then set your visuals so that the framerate consistently stays near your framerate cap - lowering the cap if necessary. I have a 144 hz monitor and cap the whole system at 140, and most games at 120 or 100. My fps stays very consistent and feels silky smooth.
I'm thinking of getting a 4090 as well. Been itching to press the button on it. I have a couple of games I'd like to push the visuals harder on, and with this new Cyberpunk 2077 DLC, I have even more of an excuse.
As others have mentioned, be sure your PSU is adequate. Minimum recommended for a 4090 is 850 watt PSU. I already dropped a 1000 in my gaming rig when I built it for future proofing, so I'm good to go.
And yeah, use a card brace. Amazon sells aftermarket ones if it doesn't come with one. My 3080's circuit board was bent like a banana after a year of use, which scared the hell out of me when reports of circuit boards cracking started coming out.This comment was edited on Sep 21, 2023, 11:31.
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