GeForce GTX 1660 Ti vs Radeon RX 580

Intro

Compare those specs to the Radeon RX 580, which comes with GPU core speed of 1257 MHz, and 8192 MB of GDDR5 RAM running at 2000 MHz through a 256-bit bus. It also is made up of 2304 Stream Processors, 144 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 1660 Ti		120 Watts
Radeon RX 580		185 Watts
	Difference: 65 Watts (54%)

Memory Bandwidth

Theoretically, the GeForce GTX 1660 Ti should be a bit faster than the Radeon RX 580 in general. (explain)

GeForce GTX 1660 Ti		294912 MB/sec
Radeon RX 580		262144 MB/sec
	Difference: 32768 (13%)

Texel Rate

The Radeon RX 580 will be quite a bit (more or less 26%) faster with regards to AF than the GeForce GTX 1660 Ti. (explain)

Radeon RX 580		181008 Mtexels/sec
GeForce GTX 1660 Ti		144000 Mtexels/sec
	Difference: 37008 (26%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce GTX 1660 Ti is a better choice, by a large margin. (explain)

GeForce GTX 1660 Ti		72000 Mpixels/sec
Radeon RX 580		40224 Mpixels/sec
	Difference: 31776 (79%)

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 worked out by multiplying the card's bus width by its memory speed. In the case of DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the faster 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 texture map elements (texels) that can be applied in one second. This is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The higher this number, the better the video card will be at handling 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 video card can possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka 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 bandwidth is, the lower the ability to get to the maximum fill rate.