[SOLVED] Are 21:9 ultrawides as hard for the GPU to run as 4k is?

King_V

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I'm not sure that you're going to see a whole lot of people who have in-person experience in changing from 4K to 3440x1440, or vice versa.

The benchmarks of games are real-world differences.

In any case, assuming that your CPU is never the limiting factor in any games:
  • The 3440x1440 has about 60% of the number of pixels as a 3840x2160 (4K)
  • Therefore:
    • a 4K monitor will give you about 60%, maybe slightly more, of the performance you'd get with the 3440x1440 monitor
    • or, if you go 1/0.6, the 3440x1440 will give you about 167%, maybe slightly less, of the performance you'd get with the 4k monitor.
Those are approximations. But, between that, and comparing game benchmarks, that's about the best you're going to get. Peoples' experiences will vary slightly, but so will the settings they use, the stuff they have running in the background, etc.
 
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NadeMagnet69

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Sorry, I meant 21:9 3440x1440 vs 4k for gaming. I see a lot of vids and articles saying that 4k just isn't as good for gaming as 1440.
I'm looking at this ginormous 4k beast right now. https://www.amazon.com/Acer-CG437K-Pbmiiippuzx-Compatible-DisplayHDR/dp/B07Z1212CQ/ref=cm_cr_arp_d_product_top?ie=UTF8
But I only have a RTX 2080 Super founders edition so it'll be hard to run and only be around 60hz for many games which is too low since 60 is where I've been maxed at for the last 8 years with my 27inch Korean Shimian 2k.

So now I'm looking at ultrawide 1440 instead and want to know what kind of refresh rates I can expect. If the ultrawides effect performance too much, than I'd be better off in my opinion with the much larger 4k. I want to spend around 1k give or take a few, max. I don't play FPS as much as I play games like warhammer total war. lol I've looked through like 3 dozen different monitors in the past few days and am starting to get lost.
Now I'm looking at
https://www.amazon.com/Alienware-Curved-NVIDIA-Edgelight-Monitor/dp/B07YLGH9Q5/ref=cm_cr_arp_d_product_top?ie=UTF8
and the
https://www.amazon.com/LG-34GN850-B-34-UltraGear-compatibilidad/dp/B086XLLG28/ref=cm_cr_arp_d_product_top?ie=UTF8

I don't know which to pick. All I know is whatever I get I'm going to have to live with for "ages."
 

King_V

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It's approximately proportional to the number of pixels. The aspect ratio doesn't matter, it's the total number of pixels.

So:
  • 1920x1080 takes a certain amount of GPU horsepower.
  • 2560x1080 (ultrawide) takes more GPU horsepower because there's more pixels than 1920x1080
  • 2560x1440 is NOT ultrawide, but takes more GPU horsepower than 2560x1080 because there are more pixels
  • 3440x1440 is ultrawide, but takes more GPU horsepower because it has more picelx, not because it's ultrawide.
  • 3840x1600 is ultrawide, but takes less GPU horsepower than 4K because it only has approx 75% of the pixels of a 4K monitor
  • 3840x2160 (4k) is NOT ultrawide, but is more demanding on the GPU than any of the above.

Now it's not exactly proportional. So, a 4K screen has 4x the number of pixels as 1920x1080, but actually tends to perform a little better than 1/4 the number of fps of a 1920x1080.
 

NadeMagnet69

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Jul 20, 2020
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Thank you but I already realize all that. What I'm trying to find out is the real world differences from people who own them for that "more/less GPU horsepower." Not just benchmarks.
 

King_V

Distinguished
I'm not sure that you're going to see a whole lot of people who have in-person experience in changing from 4K to 3440x1440, or vice versa.

The benchmarks of games are real-world differences.

In any case, assuming that your CPU is never the limiting factor in any games:
  • The 3440x1440 has about 60% of the number of pixels as a 3840x2160 (4K)
  • Therefore:
    • a 4K monitor will give you about 60%, maybe slightly more, of the performance you'd get with the 3440x1440 monitor
    • or, if you go 1/0.6, the 3440x1440 will give you about 167%, maybe slightly less, of the performance you'd get with the 4k monitor.
Those are approximations. But, between that, and comparing game benchmarks, that's about the best you're going to get. Peoples' experiences will vary slightly, but so will the settings they use, the stuff they have running in the background, etc.
 
Reactions: NadeMagnet69

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