GeForce GTX 660 vs Radeon RX 460 2GB

Intro

Compare those specs to the Radeon RX 460 2GB, which comes with GPU core speed of 1090 MHz, and 2048 MB of GDDR5 memory set to run at 1750 MHz through a 128-bit bus. It also is made up of 896 Stream Processors, 56 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 460 2GB		75 Watts
GeForce GTX 660		140 Watts
	Difference: 65 Watts (87%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 660 is 29% faster than the Radeon RX 460 2GB overall, because of its higher data rate. (explain)

GeForce GTX 660		144192 MB/sec
Radeon RX 460 2GB		112000 MB/sec
	Difference: 32192 (29%)

Texel Rate

The GeForce GTX 660 will be quite a bit (about 28%) better at anisotropic filtering than the Radeon RX 460 2GB. (explain)

GeForce GTX 660		78400 Mtexels/sec
Radeon RX 460 2GB		61040 Mtexels/sec
	Difference: 17360 (28%)

Pixel Rate

The GeForce GTX 660 is quite a bit (more or less 35%) faster with regards to anti-aliasing than the Radeon RX 460 2GB, and also will be capable of handling higher screen resolutions better. (explain)

GeForce GTX 660		23520 Mpixels/sec
Radeon RX 460 2GB		17440 Mpixels/sec
	Difference: 6080 (35%)

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 information (measured in MB per second) that can be transferred over the external memory interface in one second. The number is calculated by multiplying the interface width by the speed of its memory. In the case of DDR memory, the result should be multiplied by 2 again. If it uses 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 higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This number is calculated by multiplying the total number of texture units by the core speed of the chip. The better the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly write to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.