GeForce GTX 660 vs Radeon RX 6500 XT

Intro

Compare those specs to the Radeon RX 6500 XT, which comes with clock speeds of 2200 MHz on the GPU, and 2250 MHz on the 4096 MB of GDDR6 memory. It features 1024 SPUs along with 64 Texture Address Units 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 speaking, the Radeon RX 6500 XT should be just a bit faster than the GeForce GTX 660 overall. (explain)

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

Texel Rate

The Radeon RX 6500 XT will be a lot (more or less 80%) faster with regards to AF 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 should be quite a bit (approximately 199%) better at AA than the GeForce GTX 660, and should 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: Bandwidth is the maximum amount of information (counted in MB per second) that can be transferred over the external memory interface in one second. It is calculated by multiplying the card's interface width by the speed of its memory. In the case of DDR memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher 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 can be processed in one second. This number is worked out by multiplying the total amount of texture units of the card 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 one second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.