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GeForce RTX 3080 vs Radeon RX 7900 XT

Intro

The GeForce RTX 3080 has a GPU core speed of 1440 MHz, and the 10240 MB of GDDR6X RAM runs at 1188 MHz through a 320-bit bus. It also features 8704 Stream Processors, 272 TAUs, and 96 ROPs.

Compare those specs to the Radeon RX 7900 XT, which has clock speeds of 1500 MHz on the GPU, and 2500 MHz on the 20480 MB of GDDR6 RAM. It features 5376 SPUs as well as 336 Texture Address Units and 192 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 7900 XT 300 Watts
GeForce RTX 3080 320 Watts
Difference: 20 Watts (7%)

Memory Bandwidth

The Radeon RX 7900 XT, in theory, should be a bit faster than the GeForce RTX 3080 overall. (explain)

Radeon RX 7900 XT 819200 MB/sec
GeForce RTX 3080 778547 MB/sec
Difference: 40653 (5%)

Texel Rate

The Radeon RX 7900 XT should be quite a bit (more or less 29%) more effective at anisotropic filtering than the GeForce RTX 3080. (explain)

Radeon RX 7900 XT 504000 Mtexels/sec
GeForce RTX 3080 391680 Mtexels/sec
Difference: 112320 (29%)

Pixel Rate

The Radeon RX 7900 XT will be a lot (approximately 108%) more effective at full screen anti-aliasing than the GeForce RTX 3080, and also capable of handling higher screen resolutions more effectively. (explain)

Radeon RX 7900 XT 288000 Mpixels/sec
GeForce RTX 3080 138240 Mpixels/sec
Difference: 149760 (108%)

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 3080

Amazon.com

Check prices at:

Radeon RX 7900 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

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Model GeForce RTX 3080 Radeon RX 7900 XT
Manufacturer nVidia AMD
Year September 2020 December 2022
Code Name Ampere GA102-200-KD-A1 Navi 31 XT
Memory 10240 MB 20480 MB
Core Speed 1440 MHz 1500 MHz
Memory Speed 1188 GB/s 2500 GB/s
Power (Max TDP) 320 watts 300 watts
Bandwidth 778547 MB/sec 819200 MB/sec
Texel Rate 391680 Mtexels/sec 504000 Mtexels/sec
Pixel Rate 138240 Mpixels/sec 288000 Mpixels/sec
Unified Shaders 8704 5376
Texture Mapping Units 272 336
Render Output Units 96 192
Bus Type GDDR6X GDDR6
Bus Width 320-bit 320-bit
Fab Process 8 nm 5 nm
Transistors 28300 million 57700 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: Memory bandwidth is the max amount of data (measured in megabytes per second) that can be transferred over the external memory interface in a second. It is worked out by multiplying the card's bus width by its memory speed. If the card has DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, 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 number of texture map elements (texels) that are processed per second. This figure is calculated by multiplying the total amount of texture units by the core speed of the chip. The higher this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly record to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

Hide Prices

GeForce RTX 3080

Amazon.com

Check prices at:

Radeon RX 7900 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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