GeForce GTX 660 vs Radeon RX 6950 XT

Intro

Compare those specs to the Radeon RX 6950 XT, which has GPU core speed of 1925 MHz, and 16384 MB of GDDR6 RAM set to run at 2250 MHz through a 256-bit bus. It also is comprised of 5120 SPUs, 320 Texture Address Units, and 128 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 660		140 Watts
Radeon RX 6950 XT		335 Watts
	Difference: 195 Watts (139%)

Memory Bandwidth

In theory, the Radeon RX 6950 XT is 309% faster than the GeForce GTX 660 overall, due to its greater bandwidth. (explain)

Radeon RX 6950 XT		589824 MB/sec
GeForce GTX 660		144192 MB/sec
	Difference: 445632 (309%)

Texel Rate

The Radeon RX 6950 XT is much (more or less 686%) faster with regards to anisotropic filtering than the GeForce GTX 660. (explain)

Radeon RX 6950 XT		616000 Mtexels/sec
GeForce GTX 660		78400 Mtexels/sec
	Difference: 537600 (686%)

Pixel Rate

The Radeon RX 6950 XT is a lot (about 948%) faster with regards to FSAA than the GeForce GTX 660, and able to handle higher screen resolutions without slowing down too much. (explain)

Radeon RX 6950 XT		246400 Mpixels/sec
GeForce GTX 660		23520 Mpixels/sec
	Difference: 222880 (948%)

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 data (counted in megabytes per second) that can be transported over the external memory interface within a second. It is calculated by multiplying the interface width by the speed of its memory. In the case of DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the card's 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 texture map elements (texels) that are applied per second. This is worked out by multiplying the total texture units of the card by the core speed of the chip. The better the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly record to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.