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GeForce GTX 1080 vs GeForce RTX 2080

Intro

The GeForce GTX 1080 uses a 16 nm design. nVidia has clocked the core speed at 1607 MHz. The GDDR5X RAM runs at a frequency of 1251 MHz on this particular card. It features 2560 SPUs along with 160 Texture Address Units and 64 Rasterization Operator Units.

Compare all of that to the GeForce RTX 2080, which comes with a clock speed of 1515 MHz and a GDDR6 memory frequency of 14 MHz. It also makes use of a 256-bit memory bus, and uses a 12 nm design. It is comprised of 2944 SPUs, 184 TAUs, and 64 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 1080 180 Watts
GeForce RTX 2080 215 Watts
Difference: 35 Watts (19%)

Memory Bandwidth

In theory, the GeForce RTX 2080 is 40% quicker than the GeForce GTX 1080 overall, because of its higher bandwidth. (explain)

GeForce RTX 2080 458752 MB/sec
GeForce GTX 1080 327680 MB/sec
Difference: 131072 (40%)

Texel Rate

The GeForce RTX 2080 should be a small bit (about 8%) better at anisotropic filtering than the GeForce GTX 1080. (explain)

GeForce RTX 2080 278760 Mtexels/sec
GeForce GTX 1080 257120 Mtexels/sec
Difference: 21640 (8%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce GTX 1080 is superior to the GeForce RTX 2080, but it probably won't make a huge difference. (explain)

GeForce GTX 1080 102848 Mpixels/sec
GeForce RTX 2080 96960 Mpixels/sec
Difference: 5888 (6%)

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

Display Prices

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GeForce GTX 1080

Amazon.com

GeForce RTX 2080

Amazon.com

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

Display Specifications

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Model GeForce GTX 1080 GeForce RTX 2080
Manufacturer nVidia nVidia
Year May 2016 September 2018
Code Name GP104-400 TU104-400A-A1
Memory 8192 MB 8192 MB
Core Speed 1607 MHz 1515 MHz
Memory Speed 10008 MHz 28 GB/s
Power (Max TDP) 180 watts 215 watts
Bandwidth 327680 MB/sec 458752 MB/sec
Texel Rate 257120 Mtexels/sec 278760 Mtexels/sec
Pixel Rate 102848 Mpixels/sec 96960 Mpixels/sec
Unified Shaders 2560 2944
Texture Mapping Units 160 184
Render Output Units 64 64
Bus Type GDDR5X GDDR6
Bus Width 256-bit 256-bit
Fab Process 16 nm 12 nm
Transistors 7200 million (Unknown) million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 12.0 DirectX 12
OpenGL Version OpenGL 4.5 OpenGL 4.6

Memory Bandwidth: Bandwidth is the largest amount of data (measured in MB per second) that can be transferred past the external memory interface within a second. It's worked out by multiplying the card's bus width by its memory speed. If it uses DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied per second. This is worked out 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 video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

Hide Prices

GeForce GTX 1080

Amazon.com

GeForce RTX 2080

Amazon.com

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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