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GeForce RTX 4080 vs Radeon RX 7900 XT

Intro

The GeForce RTX 4080 uses a 4 nm design. nVidia has clocked the core speed at 2205 MHz. The GDDR6X memory runs at a frequency of 1400 MHz on this particular card. It features 9728 SPUs along with 304 TAUs and 112 ROPs.

Compare that to the Radeon RX 7900 XT, which has a clock speed of 1500 MHz and a GDDR6 memory speed of 2500 MHz. It also makes use of a 320-bit bus, and uses a 5 nm design. It is comprised of 5376 SPUs, 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

The Radeon RX 7900 XT should theoretically be a small bit faster than the GeForce RTX 4080 in general. (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 quite a bit (approximately 33%) more effective at 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

If using a high screen resolution is important to you, then the Radeon RX 7900 XT is a better choice, but it probably won't make a huge difference. (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 maximum amount of data (counted in megabytes per second) that can be transported across the external memory interface in one second. The number is worked out by multiplying the interface width by the speed of its memory. If the card has DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, 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 amount of texture map elements (texels) that are processed in one second. This figure 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 video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Render Output Units by the clock 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 also depends on many 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 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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