GeForce RTX 3080 12 GB vs Radeon RX 6500 XT

Intro

Compare those specs to the Radeon RX 6500 XT, which has GPU core speed of 2200 MHz, and 4096 MB of GDDR6 memory set to run at 2250 MHz through a 64-bit bus. It also is made up of 1024 SPUs, 64 TAUs, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6500 XT		107 Watts
GeForce RTX 3080 12 GB		350 Watts
	Difference: 243 Watts (227%)

Memory Bandwidth

Performance-wise, the GeForce RTX 3080 12 GB should in theory be much superior to the Radeon RX 6500 XT overall. (explain)

GeForce RTX 3080 12 GB		934298 MB/sec
Radeon RX 6500 XT		147456 MB/sec
	Difference: 786842 (534%)

Texel Rate

The GeForce RTX 3080 12 GB will be a lot (about 151%) better at anisotropic filtering than the Radeon RX 6500 XT. (explain)

GeForce RTX 3080 12 GB		352800 Mtexels/sec
Radeon RX 6500 XT		140800 Mtexels/sec
	Difference: 212000 (151%)

Pixel Rate

The GeForce RTX 3080 12 GB is much (more or less 100%) more effective at anti-aliasing than the Radeon RX 6500 XT, and able to handle higher resolutions better. (explain)

GeForce RTX 3080 12 GB		141120 Mpixels/sec
Radeon RX 6500 XT		70400 Mpixels/sec
	Difference: 70720 (100%)

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 largest amount of information (measured in MB per second) that can be moved over the external memory interface in a second. It's calculated by multiplying the interface width by the speed of its memory. If it uses DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, 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 is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the graphics 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 most pixels the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on 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 maximum fill rate.