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GeForce RTX 3080 12 GB vs Radeon RX 7900 XTX

Intro

The GeForce RTX 3080 12 GB comes with a core clock speed of 1260 MHz and a GDDR6X memory speed of 1188 MHz. It also features a 384-bit bus, and uses a 8 nm design. It is comprised of 8960 SPUs, 280 Texture Address Units, and 112 Raster Operation Units.

Compare all that to the Radeon RX 7900 XTX, which features a clock speed of 1855 MHz and a GDDR6 memory frequency of 2500 MHz. It also uses a 384-bit memory bus, and uses a 5 nm design. It features 6144 SPUs, 384 Texture Address Units, and 192 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce RTX 3080 12 GB 350 Watts
Radeon RX 7900 XTX 355 Watts
Difference: 5 Watts (1%)

Memory Bandwidth

In theory, the Radeon RX 7900 XTX will be 5% faster than the GeForce RTX 3080 12 GB overall, because of its greater data rate. (explain)

Radeon RX 7900 XTX 983040 MB/sec
GeForce RTX 3080 12 GB 934298 MB/sec
Difference: 48742 (5%)

Texel Rate

The Radeon RX 7900 XTX should be a lot (about 102%) more effective at anisotropic filtering than the GeForce RTX 3080 12 GB. (explain)

Radeon RX 7900 XTX 712320 Mtexels/sec
GeForce RTX 3080 12 GB 352800 Mtexels/sec
Difference: 359520 (102%)

Pixel Rate

The Radeon RX 7900 XTX should be quite a bit (more or less 152%) more effective at AA than the GeForce RTX 3080 12 GB, and should be able to handle higher resolutions more effectively. (explain)

Radeon RX 7900 XTX 356160 Mpixels/sec
GeForce RTX 3080 12 GB 141120 Mpixels/sec
Difference: 215040 (152%)

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 12 GB

Amazon.com

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Radeon RX 7900 XTX

Amazon.com

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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 12 GB Radeon RX 7900 XTX
Manufacturer nVidia AMD
Year January 2022 December 2022
Code Name GA102-220-A1 Navi 31 XTX
Memory 12288 MB 24576 MB
Core Speed 1260 MHz 1855 MHz
Memory Speed 1188 GB/s 2500 GB/s
Power (Max TDP) 350 watts 355 watts
Bandwidth 934298 MB/sec 983040 MB/sec
Texel Rate 352800 Mtexels/sec 712320 Mtexels/sec
Pixel Rate 141120 Mpixels/sec 356160 Mpixels/sec
Unified Shaders 8960 6144
Texture Mapping Units 280 384
Render Output Units 112 192
Bus Type GDDR6X GDDR6
Bus Width 384-bit 384-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: Bandwidth is the maximum amount of data (in units of megabytes per second) that can be transported across the external memory interface within a second. It is calculated by multiplying the card's interface width by its memory speed. In the case of DDR type memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster 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 number is worked out 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 applied in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

Hide Prices

GeForce RTX 3080 12 GB

Amazon.com

Check prices at:

Radeon RX 7900 XTX

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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