GeForce GTX 1080 vs GeForce GTX 580 3GB

Intro

Compare all of that to the GeForce GTX 580 3GB, which has GPU core speed of 772 MHz, and 3072 MB of GDDR5 RAM set to run at 1002 MHz through a 384-bit bus. It also features 512 SPUs, 64 TAUs, and 48 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 1080		180 Watts
GeForce GTX 580 3GB		244 Watts
	Difference: 64 Watts (36%)

Memory Bandwidth

The GeForce GTX 1080 should in theory be a lot faster than the GeForce GTX 580 3GB in general. (explain)

GeForce GTX 1080		327680 MB/sec
GeForce GTX 580 3GB		192384 MB/sec
	Difference: 135296 (70%)

Texel Rate

The GeForce GTX 1080 will be much (more or less 420%) better at AF than the GeForce GTX 580 3GB. (explain)

GeForce GTX 1080		257120 Mtexels/sec
GeForce GTX 580 3GB		49408 Mtexels/sec
	Difference: 207712 (420%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce GTX 1080 is superior to the GeForce GTX 580 3GB, and very much so. (explain)

GeForce GTX 1080		102848 Mpixels/sec
GeForce GTX 580 3GB		37056 Mpixels/sec
	Difference: 65792 (178%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the maximum amount of information (in units of MB per second) that can be moved over the external memory interface in a second. The number is calculated by multiplying the card's interface width by its memory clock speed. If the card has DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed in one second. This number is worked out by multiplying the total number of texture units by the core speed of the chip. The higher the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.