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GeForce RTX 2080 vs Radeon RX 6900 XT

Intro

The GeForce RTX 2080 has a GPU core speed of 1515 MHz, and the 8192 MB of GDDR6 memory runs at 1750 MHz through a 256-bit bus. It also is made up of 2944 Stream Processors, 184 TAUs, and 64 ROPs.

Compare that to the Radeon RX 6900 XT, which has a core clock speed of 1825 MHz and a GDDR6 memory frequency of 2000 MHz. It also uses a 256-bit bus, and uses a 7 nm design. It is made up of 5120 SPUs, 320 TAUs, and 128 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce RTX 2080 215 Watts
Radeon RX 6900 XT 300 Watts
Difference: 85 Watts (40%)

Memory Bandwidth

As far as performance goes, the Radeon RX 6900 XT should in theory be a small bit superior to the GeForce RTX 2080 in general. (explain)

Radeon RX 6900 XT 524288 MB/sec
GeForce RTX 2080 458752 MB/sec
Difference: 65536 (14%)

Texel Rate

The Radeon RX 6900 XT is quite a bit (about 109%) more effective at AF than the GeForce RTX 2080. (explain)

Radeon RX 6900 XT 584000 Mtexels/sec
GeForce RTX 2080 278760 Mtexels/sec
Difference: 305240 (109%)

Pixel Rate

The Radeon RX 6900 XT is a lot (more or less 141%) more effective at AA than the GeForce RTX 2080, and should be capable of handling higher resolutions while still performing well. (explain)

Radeon RX 6900 XT 233600 Mpixels/sec
GeForce RTX 2080 96960 Mpixels/sec
Difference: 136640 (141%)

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 RTX 2080

Amazon.com

Check prices at:

Radeon RX 6900 XT

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.

Specifications

Display Specifications

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Model GeForce RTX 2080 Radeon RX 6900 XT
Manufacturer nVidia AMD
Year September 2018 2020
Code Name TU104-400A-A1 Navi 21
Memory 8192 MB 16384 MB
Core Speed 1515 MHz 1825 MHz
Memory Speed 1750 GB/s 2000 GB/s
Power (Max TDP) 215 watts 300 watts
Bandwidth 458752 MB/sec 524288 MB/sec
Texel Rate 278760 Mtexels/sec 584000 Mtexels/sec
Pixel Rate 96960 Mpixels/sec 233600 Mpixels/sec
Unified Shaders 2944 5120
Texture Mapping Units 184 320
Render Output Units 64 128
Bus Type GDDR6 GDDR6
Bus Width 256-bit 256-bit
Fab Process 12 nm 7 nm
Transistors (Unknown) million 26800 million
Bus PCIe 3.0 x16 PCIe 4.0 x16
DirectX Version DirectX 12 DirectX 12
OpenGL Version OpenGL 4.6 OpenGL 4.6

Memory Bandwidth: Memory bandwidth is the max amount of data (counted in MB per second) that can be moved past the external memory interface in a second. It is worked out by multiplying the card's interface width by its memory speed. If it uses DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better 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 texture map elements (texels) that can be processed per second. This is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The better this number, the better the video 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 video card could possibly record to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

Hide Prices

GeForce RTX 2080

Amazon.com

Check prices at:

Radeon RX 6900 XT

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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