GeForce GTX 660 Ti vs Radeon RX 480 4GB

Intro

Compare all that to the Radeon RX 480 4GB, which features a clock speed of 1120 MHz and a GDDR5 memory frequency of 1750 MHz. It also uses a 256-bit bus, and uses a 14 nm design. It is comprised of 2304 SPUs, 144 TAUs, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Both cards have the same power consumption.

Memory Bandwidth

In theory, the Radeon RX 480 4GB should be 59% faster than the GeForce GTX 660 Ti in general, due to its higher data rate. (explain)

Radeon RX 480 4GB		229376 MB/sec
GeForce GTX 660 Ti		144000 MB/sec
	Difference: 85376 (59%)

Texel Rate

The Radeon RX 480 4GB should be quite a bit (about 57%) more effective at anisotropic filtering than the GeForce GTX 660 Ti. (explain)

Radeon RX 480 4GB		161280 Mtexels/sec
GeForce GTX 660 Ti		102480 Mtexels/sec
	Difference: 58800 (57%)

Pixel Rate

The Radeon RX 480 4GB is a lot (about 63%) better at full screen anti-aliasing than the GeForce GTX 660 Ti, and also capable of handling higher screen resolutions without slowing down too much. (explain)

Radeon RX 480 4GB		35840 Mpixels/sec
GeForce GTX 660 Ti		21960 Mpixels/sec
	Difference: 13880 (63%)

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 max amount of data (in units of megabytes per second) that can be moved past the external memory interface in one second. It's calculated by multiplying the bus width by its memory clock speed. In the case of DDR type RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the 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 amount of texture map elements (texels) that can be processed per second. This is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

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