Take the 2-minute tour ×
Arqade is a question and answer site for passionate videogamers on all platforms. It's 100% free, no registration required.

If you take a generic game and change resolution to 640 x 480, 1280 x 1024 and 1920 x 1080 respectively, how heavily would this affect performance?

Is resolution an important factor or rather neglectible when trying to find perfect settings for a non-high-end graphics-card?

share|improve this question
add comment

2 Answers 2

up vote 5 down vote accepted

It is (after switching AA off) the most important setting: doubling your resolution requires four times as many pixels to be updated per frame. So, as a rough estimate, by decreasing your resolution for a factor 1/f, your framerate can increase up to f².

share|improve this answer
    
Thank you for this answer. It helped me a lot to understand how graphics card work. –  MechMK1 Jul 1 '12 at 11:52
add comment

You can actually answer that yourself. A graphics card has to calculate the value for every pixel from a series of functions.

Every resolution defines the available pixels on the screen (e.g. 640*480 = 307200). As the each resolution grows in both dimensions (width and height or x and y) this is a quadratic (x^2) function that grows faster than linear.

There are still other factors to consider, but the count of pixels is a very important factor for how fast your graphics card can calculate 1 frame.

share|improve this answer
1  
With cubic I assume you mean square? And exponentially is an entirely different thing. Please be a bit more precise... –  Zommuter Jul 1 '12 at 14:06
    
The word is quadratic. ;) –  Jeff Mercado Jul 1 '12 at 16:50
    
I didn't notice your edit earlier, sorry. I took back my downvote. @Jeff I stand corrected :-7 –  Zommuter Jul 26 '12 at 19:18
add comment

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.