GeForce GTX 660 vs Radeon RX 6500 XT

Intro

Compare those specifications to the Radeon RX 6500 XT, which uses a 6 nm design. AMD has clocked the core speed at 2200 MHz. The GDDR6 RAM works at a frequency of 2250 MHz on this model. It features 1024 SPUs along with 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 GTX 660		140 Watts
	Difference: 33 Watts (31%)

Memory Bandwidth

Theoretically, the Radeon RX 6500 XT should perform just a bit faster than the GeForce GTX 660 in general. (explain)

Radeon RX 6500 XT		147456 MB/sec
GeForce GTX 660		144192 MB/sec
	Difference: 3264 (2%)

Texel Rate

The Radeon RX 6500 XT is quite a bit (approximately 80%) more effective at anisotropic filtering than the GeForce GTX 660. (explain)

Radeon RX 6500 XT		140800 Mtexels/sec
GeForce GTX 660		78400 Mtexels/sec
	Difference: 62400 (80%)

Pixel Rate

The Radeon RX 6500 XT will be much (about 199%) more effective at AA than the GeForce GTX 660, and will be able to handle higher resolutions without losing too much performance. (explain)

Radeon RX 6500 XT		70400 Mpixels/sec
GeForce GTX 660		23520 Mpixels/sec
	Difference: 46880 (199%)

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 (in units of megabytes per second) that can be transferred over the external memory interface in a second. It's calculated by multiplying the bus width by its memory speed. If it uses DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This is calculated by multiplying the total texture units by the core 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 per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly write to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.