GeForce GTX 580 3GB vs GeForce RTX 3080 12 GB

Intro

Compare those specs to the GeForce RTX 3080 12 GB, which comes with GPU core speed of 1260 MHz, and 12288 MB of GDDR6X RAM set to run at 1188 MHz through a 384-bit bus. It also features 8960 SPUs, 280 Texture Address Units, and 112 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 580 3GB		244 Watts
GeForce RTX 3080 12 GB		350 Watts
	Difference: 106 Watts (43%)

Memory Bandwidth

As far as performance goes, the GeForce RTX 3080 12 GB should theoretically be quite a bit better than the GeForce GTX 580 3GB in general. (explain)

GeForce RTX 3080 12 GB		934298 MB/sec
GeForce GTX 580 3GB		192384 MB/sec
	Difference: 741914 (386%)

Texel Rate

The GeForce RTX 3080 12 GB should be much (more or less 614%) better at anisotropic filtering than the GeForce GTX 580 3GB. (explain)

GeForce RTX 3080 12 GB		352800 Mtexels/sec
GeForce GTX 580 3GB		49408 Mtexels/sec
	Difference: 303392 (614%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce RTX 3080 12 GB is superior to the GeForce GTX 580 3GB, and very much so. (explain)

GeForce RTX 3080 12 GB		141120 Mpixels/sec
GeForce GTX 580 3GB		37056 Mpixels/sec
	Difference: 104064 (281%)

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: Memory bandwidth is the max amount of data (in units of megabytes per second) that can be transported past the external memory interface within a second. The number is worked out by multiplying the card's bus width by its memory clock speed. If it uses DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the 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 amount of texture map elements (texels) that are applied per second. This number is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The higher this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.