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GeForce RTX 3080 12 GB vs Radeon RX 7900 XT

Intro

The GeForce RTX 3080 12 GB uses a 8 nm design. nVidia has set the core speed at 1260 MHz. The GDDR6X RAM runs at a speed of 1188 MHz on this particular card. It features 8960 SPUs along with 280 TAUs and 112 ROPs.

Compare all that to the Radeon RX 7900 XT, which makes use of a 5 nm design. AMD has clocked the core speed at 1500 MHz. The GDDR6 memory runs at a speed of 2500 MHz on this specific card. It features 5376 SPUs along with 336 Texture Address Units and 192 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 7900 XT 300 Watts
GeForce RTX 3080 12 GB 350 Watts
Difference: 50 Watts (17%)

Memory Bandwidth

In theory, the GeForce RTX 3080 12 GB should perform a small bit faster than the Radeon RX 7900 XT overall. (explain)

GeForce RTX 3080 12 GB 934298 MB/sec
Radeon RX 7900 XT 819200 MB/sec
Difference: 115098 (14%)

Texel Rate

The Radeon RX 7900 XT is much (about 43%) more effective at anisotropic filtering than the GeForce RTX 3080 12 GB. (explain)

Radeon RX 7900 XT 504000 Mtexels/sec
GeForce RTX 3080 12 GB 352800 Mtexels/sec
Difference: 151200 (43%)

Pixel Rate

The Radeon RX 7900 XT is much (about 104%) more effective at FSAA than the GeForce RTX 3080 12 GB, and also will be able to handle higher resolutions without slowing down too much. (explain)

Radeon RX 7900 XT 288000 Mpixels/sec
GeForce RTX 3080 12 GB 141120 Mpixels/sec
Difference: 146880 (104%)

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

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 12 GB Radeon RX 7900 XT
Manufacturer nVidia AMD
Year January 2022 December 2022
Code Name GA102-220-A1 Navi 31 XT
Memory 12288 MB 20480 MB
Core Speed 1260 MHz 1500 MHz
Memory Speed 1188 GB/s 2500 GB/s
Power (Max TDP) 350 watts 300 watts
Bandwidth 934298 MB/sec 819200 MB/sec
Texel Rate 352800 Mtexels/sec 504000 Mtexels/sec
Pixel Rate 141120 Mpixels/sec 288000 Mpixels/sec
Unified Shaders 8960 5376
Texture Mapping Units 280 336
Render Output Units 112 192
Bus Type GDDR6X GDDR6
Bus Width 384-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: Bandwidth is the max amount of information (measured in megabytes per second) that can be moved across the external memory interface within a second. It is worked out by multiplying the interface width by its memory speed. If it uses DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

Hide Prices

GeForce RTX 3080 12 GB

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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