How much performance change between 1080p and 768p?

[Eckoshy]

So I'm looking into upgrading my graphics card sometime soon. After a fair amount of research I think the GTX 960 should suit my needs very nicely and stay in my price range (about $200). But I've got a somewhat odd concern. See, every time I look at the 960 benchmarks everyone always uses 1080p for their tests, and my monitors natural resolution is 1360 x 768. I know that should make the performance go up as I play on lower resolution, but I'm wondering how much it will change the performance. For example, I saw The Witcher 3 benchmarked with a 960 running at 1080p Ultra settings, and it was getting 40-50 fps average. Let's assume I'm running the same settings, but at 768p, how much should I expect the performance to improve?

 

[drixkarasu]

1360x768= 1044480 pixels
1920x1080= 2073600 pixels

Since your resolution is almost half the pixel count, your performance will probably be about 70-80% higher (half the resolution doesn't mean exactly double the performance), you should be able to run The Witcher 3 at a constant 60fps.

 

[geofelt]

FPS performance is determined by the weaker of cpu or graphics.
What is your cpu and gpu now?

You can get an idea of the benefits in a sort of backhanded way.
Run your games, but lower your resolution and eye candy.
If your FPS increases, it indicates that your cpu is strong enough to drive a better graphics configuration.
If your FPS stays the same, you are likely more cpu limited.

 

[Eckoshy]

Oh yeah, I've already done some tests, my CPU is more than capable of handling the game. It's just the GPU that's the problem. Anyway, thanks for the help both of you.