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GeForce RTX 3090 vs Radeon RX 6800

Intro

The GeForce RTX 3090 features core speeds of 1395 MHz on the GPU, and 1219 MHz on the 24576 MB of GDDR6X RAM. It features 10496 SPUs as well as 328 TAUs and 112 Rasterization Operator Units.

Compare those specifications to the Radeon RX 6800, which comes with core clock speeds of 1700 MHz on the GPU, and 2000 MHz on the 16384 MB of GDDR6 memory. It features 3840 SPUs as well as 240 TAUs and 96 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6800 250 Watts
GeForce RTX 3090 350 Watts
Difference: 100 Watts (40%)

Memory Bandwidth

In theory, the GeForce RTX 3090 should perform much faster than the Radeon RX 6800 overall. (explain)

GeForce RTX 3090 958668 MB/sec
Radeon RX 6800 524288 MB/sec
Difference: 434380 (83%)

Texel Rate

The GeForce RTX 3090 will be a small bit (approximately 12%) better at texture filtering than the Radeon RX 6800. (explain)

GeForce RTX 3090 457560 Mtexels/sec
Radeon RX 6800 408000 Mtexels/sec
Difference: 49560 (12%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon RX 6800 is a better choice, but not by far. (explain)

Radeon RX 6800 163200 Mpixels/sec
GeForce RTX 3090 156240 Mpixels/sec
Difference: 6960 (4%)

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 3090

Amazon.com

Check prices at:

Radeon RX 6800

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

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Model GeForce RTX 3090 Radeon RX 6800
Manufacturer nVidia AMD
Year September 2020 November 2020
Code Name GA102-300-A1 Navi 21
Memory 24576 MB 16384 MB
Core Speed 1395 MHz 1700 MHz
Memory Speed 1219 GB/s 2000 GB/s
Power (Max TDP) 350 watts 250 watts
Bandwidth 958668 MB/sec 524288 MB/sec
Texel Rate 457560 Mtexels/sec 408000 Mtexels/sec
Pixel Rate 156240 Mpixels/sec 163200 Mpixels/sec
Unified Shaders 10496 3840
Texture Mapping Units 328 240
Render Output Units 112 96
Bus Type GDDR6X GDDR6
Bus Width 384-bit 256-bit
Fab Process 8 nm 7 nm
Transistors 28300 million 26800 million
Bus PCIe 4.0 x16 PCIe 4.0 x16
DirectX Version DirectX 12 DirectX 12
OpenGL Version OpenGL 4.6 OpenGL 4.6

Memory Bandwidth: Bandwidth is the maximum amount of information (counted in MB per second) that can be transported over the external memory interface in one second. The number is calculated by multiplying the card's bus width by its memory clock speed. If it uses DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly record to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.

Display Prices

Hide Prices

GeForce RTX 3090

Amazon.com

Check prices at:

Radeon RX 6800

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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