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GeForce GTX 1660 Ti vs Radeon RX 580

Intro

The GeForce GTX 1660 Ti comes with clock speeds of 1500 MHz on the GPU, and 1500 MHz on the 6144 MB of GDDR6 memory. It features 1536 SPUs as well as 96 TAUs and 48 ROPs.

Compare that to the Radeon RX 580, which has GPU clock speed of 1257 MHz, and 8192 MB of GDDR5 RAM set to run 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.

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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

In theory, the GeForce GTX 1660 Ti is 13% faster than the Radeon RX 580 overall, because of its higher data rate. (explain)

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

Texel Rate

The Radeon RX 580 is quite a bit (more or less 26%) more effective at anisotropic filtering 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 using a high screen resolution is important to you, then the GeForce GTX 1660 Ti is the winner, by far. (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

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GeForce GTX 1660 Ti

Amazon.com

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Radeon RX 580

Amazon.com

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Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

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Model GeForce GTX 1660 Ti Radeon RX 580
Manufacturer nVidia AMD
Year February 2019 April 2017
Code Name TU116-400-A1 Polaris 20
Memory 6144 MB 8192 MB
Core Speed 1500 MHz 1257 MHz
Memory Speed 1500 GB/s 8000 MHz
Power (Max TDP) 120 watts 185 watts
Bandwidth 294912 MB/sec 262144 MB/sec
Texel Rate 144000 Mtexels/sec 181008 Mtexels/sec
Pixel Rate 72000 Mpixels/sec 40224 Mpixels/sec
Unified Shaders 1536 2304
Texture Mapping Units 96 144
Render Output Units 48 32
Bus Type GDDR6 GDDR5
Bus Width 192-bit 256-bit
Fab Process 12 nm 14 nm
Transistors 6600 million 5700 million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 12.0 DirectX 12.0
OpenGL Version OpenGL 4.6 OpenGL 4.5

Memory Bandwidth: Bandwidth is the max amount of data (in units of MB per second) that can be moved across the external memory interface within a second. The number is calculated by multiplying the card's bus width by the speed of its memory. If it uses DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed per second. This figure is worked out by multiplying the total number of texture units by the core speed of the chip. The higher the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly write to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

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GeForce GTX 1660 Ti

Amazon.com

Check prices at:

Radeon RX 580

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

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