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GeForce RTX 2080 vs Geforce GTX 1080 Ti

Intro

The GeForce RTX 2080 features a GPU clock speed of 1515 MHz, and the 8192 MB of GDDR6 memory is set to run at 14 MHz through a 256-bit bus. It also is comprised of 2944 SPUs, 184 Texture Address Units, and 64 Raster Operation Units.

Compare all that to the Geforce GTX 1080 Ti, which has GPU clock speed of 1480 MHz, and 11264 MB of GDDR5X RAM set to run at 1376 MHz through a 352-bit bus. It also is made up of 3584 SPUs, 224 TAUs, and 88 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce RTX 2080 215 Watts
Geforce GTX 1080 Ti 250 Watts
Difference: 35 Watts (16%)

Memory Bandwidth

Theoretically speaking, the Geforce GTX 1080 Ti will be 8% quicker than the GeForce RTX 2080 in general, because of its greater bandwidth. (explain)

Geforce GTX 1080 Ti 495616 MB/sec
GeForce RTX 2080 458752 MB/sec
Difference: 36864 (8%)

Texel Rate

The Geforce GTX 1080 Ti will be a small bit (about 19%) more effective at AF than the GeForce RTX 2080. (explain)

Geforce GTX 1080 Ti 331520 Mtexels/sec
GeForce RTX 2080 278760 Mtexels/sec
Difference: 52760 (19%)

Pixel Rate

The Geforce GTX 1080 Ti should be a lot (about 34%) better at full screen anti-aliasing than the GeForce RTX 2080, and also able to handle higher screen resolutions while still performing well. (explain)

Geforce GTX 1080 Ti 130240 Mpixels/sec
GeForce RTX 2080 96960 Mpixels/sec
Difference: 33280 (34%)

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 RTX 2080

Amazon.com

Geforce GTX 1080 Ti

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

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Model GeForce RTX 2080 Geforce GTX 1080 Ti
Manufacturer nVidia nVidia
Year September 2018 March 2017
Code Name TU104-400A-A1 GP102
Memory 8192 MB 11264 MB
Core Speed 1515 MHz 1480 MHz
Memory Speed 14 GB/s 11008 MHz
Power (Max TDP) 215 watts 250 watts
Bandwidth 458752 MB/sec 495616 MB/sec
Texel Rate 278760 Mtexels/sec 331520 Mtexels/sec
Pixel Rate 96960 Mpixels/sec 130240 Mpixels/sec
Unified Shaders 2944 3584
Texture Mapping Units 184 224
Render Output Units 64 88
Bus Type GDDR6 GDDR5X
Bus Width 256-bit 352-bit
Fab Process 12 nm 16 nm
Transistors (Unknown) million 12000 million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 12 DirectX 12.0
OpenGL Version OpenGL 4.6 OpenGL 4.5

Memory Bandwidth: Memory bandwidth is the maximum amount of data (in units of megabytes per second) that can be moved past the external memory interface within a second. The number is worked out by multiplying the card's interface width by its memory clock speed. If the card has DDR type 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 AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

Hide Prices

GeForce RTX 2080

Amazon.com

Geforce GTX 1080 Ti

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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