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GeForce RTX 3080 12 GB vs Radeon RX 7900 XT

Intro

The GeForce RTX 3080 12 GB has a GPU core clock speed of 1260 MHz, and the 12288 MB of GDDR6X RAM is set to run at 1188 MHz through a 384-bit bus. It also is comprised of 8960 Stream Processors, 280 Texture Address Units, and 112 ROPs.

Compare all that to the Radeon RX 7900 XT, which has a GPU core clock speed of 1500 MHz, and 20480 MB of GDDR6 memory set to run at 2500 MHz through a 320-bit bus. It also features 5376 SPUs, 336 Texture Address Units, and 192 Raster Operation Units.

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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

Theoretically speaking, the GeForce RTX 3080 12 GB should be 14% quicker than the Radeon RX 7900 XT overall, because of its higher bandwidth. (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 quite a bit (about 43%) more effective at AF 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 a lot (about 104%) faster with regards to full screen anti-aliasing than the GeForce RTX 3080 12 GB, and also 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: Memory bandwidth is the maximum amount of data (measured in MB per second) that can be moved past the external memory interface in a second. It's calculated by multiplying the bus width by its memory speed. In the case of DDR RAM, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This number is worked out by multiplying the total number of texture units by the core speed of the chip. The higher this number, the better the 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 can possibly write to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max 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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