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GeForce RTX 3080 12 GB vs Radeon RX 7900 XTX

Intro

The GeForce RTX 3080 12 GB features a core clock frequency of 1260 MHz and a GDDR6X memory frequency of 1188 MHz. It also features a 384-bit bus, and makes use of a 8 nm design. It is made up of 8960 SPUs, 280 Texture Address Units, and 112 ROPs.

Compare all of that to the Radeon RX 7900 XTX, which has core speeds of 1855 MHz on the GPU, and 2500 MHz on the 24576 MB of GDDR6 RAM. It features 6144 SPUs along with 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

As far as performance goes, the Radeon RX 7900 XTX should theoretically be a bit better than the GeForce RTX 3080 12 GB overall. (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 will be much (approximately 102%) more effective at texture 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

If running with a high resolution is important to you, then the Radeon RX 7900 XTX is superior to the GeForce RTX 3080 12 GB, and very much so. (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: Memory bandwidth is the largest amount of data (in units of MB per second) that can be transferred over the external memory interface in a second. It is calculated by multiplying the bus width by its memory clock speed. In the case of DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly write to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). 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 ability to reach the max fill rate.

Display Prices

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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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