GeForce GTX 660 Ti vs Radeon RX 6800

Intro

Compare those specs to the Radeon RX 6800, which has a GPU core clock speed of 1700 MHz, and 16384 MB of GDDR6 RAM set to run at 2000 MHz through a 256-bit bus. It also is made up of 3840 Stream Processors, 240 TAUs, and 96 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 660 Ti		150 Watts
Radeon RX 6800		250 Watts
	Difference: 100 Watts (67%)

Memory Bandwidth

Theoretically speaking, the Radeon RX 6800 will be 264% faster than the GeForce GTX 660 Ti in general, because of its greater bandwidth. (explain)

Radeon RX 6800		524288 MB/sec
GeForce GTX 660 Ti		144000 MB/sec
	Difference: 380288 (264%)

Texel Rate

The Radeon RX 6800 is quite a bit (about 298%) more effective at anisotropic filtering than the GeForce GTX 660 Ti. (explain)

Radeon RX 6800		408000 Mtexels/sec
GeForce GTX 660 Ti		102480 Mtexels/sec
	Difference: 305520 (298%)

Pixel Rate

The Radeon RX 6800 will be a lot (about 643%) more effective at FSAA than the GeForce GTX 660 Ti, and able to handle higher screen resolutions without losing too much performance. (explain)

Radeon RX 6800		163200 Mpixels/sec
GeForce GTX 660 Ti		21960 Mpixels/sec
	Difference: 141240 (643%)

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 max amount of data (counted in MB per second) that can be moved past the external memory interface in one second. The number is calculated by multiplying the interface width by its memory clock speed. In the case of DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed in one second. This number is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The better 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 maximum amount of pixels that the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.