GeForce RTX 3080 Ti vs Radeon RX 580

Intro

Compare that to the Radeon RX 580, which features a GPU core clock speed of 1257 MHz, and 8192 MB of GDDR5 RAM running at 2000 MHz through a 256-bit bus. It also features 2304 Stream Processors, 144 TAUs, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 580		185 Watts
GeForce RTX 3080 Ti		350 Watts
	Difference: 165 Watts (89%)

Memory Bandwidth

In theory, the GeForce RTX 3080 Ti will be 256% faster than the Radeon RX 580 overall, due to its higher bandwidth. (explain)

GeForce RTX 3080 Ti		934297 MB/sec
Radeon RX 580		262144 MB/sec
	Difference: 672153 (256%)

Texel Rate

The GeForce RTX 3080 Ti is much (approximately 141%) faster with regards to texture filtering than the Radeon RX 580. (explain)

GeForce RTX 3080 Ti		436800 Mtexels/sec
Radeon RX 580		181008 Mtexels/sec
	Difference: 255792 (141%)

Pixel Rate

The GeForce RTX 3080 Ti should be much (more or less 280%) faster with regards to AA than the Radeon RX 580, and capable of handling higher resolutions more effectively. (explain)

GeForce RTX 3080 Ti		152880 Mpixels/sec
Radeon RX 580		40224 Mpixels/sec
	Difference: 112656 (280%)

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 largest amount of data (counted in megabytes per second) that can be moved across the external memory interface in one second. It's calculated by multiplying the bus width by its memory clock speed. If it uses DDR RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This figure is calculated by multiplying the total amount of texture units by the core speed of the chip. The better this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly write to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs 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 rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.