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GeForce RTX 4080 vs Radeon RX 7900 XT

Intro

The GeForce RTX 4080 has a GPU core clock speed of 2205 MHz, and the 16384 MB of GDDR6X RAM runs at 1400 MHz through a 256-bit bus. It also is made up of 9728 Stream Processors, 304 TAUs, and 112 ROPs.

Compare all of that to the Radeon RX 7900 XT, which makes use of a 5 nm design. AMD has set the core speed at 1500 MHz. The GDDR6 RAM is set to run at a speed of 2500 MHz on this card. It features 5376 SPUs along with 336 TAUs 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 4080 320 Watts
Difference: 20 Watts (7%)

Memory Bandwidth

Theoretically speaking, the Radeon RX 7900 XT should be 12% quicker than the GeForce RTX 4080 in general, because of its greater bandwidth. (explain)

Radeon RX 7900 XT 819200 MB/sec
GeForce RTX 4080 734003 MB/sec
Difference: 85197 (12%)

Texel Rate

The GeForce RTX 4080 will be a lot (approximately 33%) faster with regards to AF than the Radeon RX 7900 XT. (explain)

GeForce RTX 4080 670320 Mtexels/sec
Radeon RX 7900 XT 504000 Mtexels/sec
Difference: 166320 (33%)

Pixel Rate

The Radeon RX 7900 XT is a little bit (about 17%) more effective at AA than the GeForce RTX 4080, and able to handle higher resolutions better. (explain)

Radeon RX 7900 XT 288000 Mpixels/sec
GeForce RTX 4080 246960 Mpixels/sec
Difference: 41040 (17%)

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 4080

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 4080 Radeon RX 7900 XT
Manufacturer nVidia AMD
Year November 2022 December 2022
Code Name AD103-300-A1 Navi 31 XT
Memory 16384 MB 20480 MB
Core Speed 2205 MHz 1500 MHz
Memory Speed 1400 GB/s 2500 GB/s
Power (Max TDP) 320 watts 300 watts
Bandwidth 734003 MB/sec 819200 MB/sec
Texel Rate 670320 Mtexels/sec 504000 Mtexels/sec
Pixel Rate 246960 Mpixels/sec 288000 Mpixels/sec
Unified Shaders 9728 5376
Texture Mapping Units 304 336
Render Output Units 112 192
Bus Type GDDR6X GDDR6
Bus Width 256-bit 320-bit
Fab Process 4 nm 5 nm
Transistors 45900 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 transferred past the external memory interface in one second. The number is worked out by multiplying the card's interface width by its memory speed. If it uses DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly write to its local memory per 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 - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

Hide Prices

GeForce RTX 4080

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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