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GeForce RTX 4080 vs Radeon RX 7900 XTX

Intro

The GeForce RTX 4080 has clock speeds of 2205 MHz on the GPU, and 1400 MHz on the 16384 MB of GDDR6X memory. It features 9728 SPUs as well as 304 Texture Address Units and 112 ROPs.

Compare those specifications to the Radeon RX 7900 XTX, which uses a 5 nm design. AMD has set the core speed at 1855 MHz. The GDDR6 RAM runs at a frequency of 2500 MHz on this card. It features 6144 SPUs along with 384 TAUs and 192 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce RTX 4080 320 Watts
Radeon RX 7900 XTX 355 Watts
Difference: 35 Watts (11%)

Memory Bandwidth

In theory, the Radeon RX 7900 XTX should perform quite a bit faster than the GeForce RTX 4080 overall. (explain)

Radeon RX 7900 XTX 983040 MB/sec
GeForce RTX 4080 734003 MB/sec
Difference: 249037 (34%)

Texel Rate

The Radeon RX 7900 XTX will be a little bit (about 6%) more effective at AF than the GeForce RTX 4080. (explain)

Radeon RX 7900 XTX 712320 Mtexels/sec
GeForce RTX 4080 670320 Mtexels/sec
Difference: 42000 (6%)

Pixel Rate

The Radeon RX 7900 XTX should be a lot (approximately 44%) faster with regards to FSAA than the GeForce RTX 4080, and also will be capable of handling higher resolutions without slowing down too much. (explain)

Radeon RX 7900 XTX 356160 Mpixels/sec
GeForce RTX 4080 246960 Mpixels/sec
Difference: 109200 (44%)

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 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.

Specifications

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Model GeForce RTX 4080 Radeon RX 7900 XTX
Manufacturer nVidia AMD
Year November 2022 December 2022
Code Name AD103-300-A1 Navi 31 XTX
Memory 16384 MB 24576 MB
Core Speed 2205 MHz 1855 MHz
Memory Speed 1400 GB/s 2500 GB/s
Power (Max TDP) 320 watts 355 watts
Bandwidth 734003 MB/sec 983040 MB/sec
Texel Rate 670320 Mtexels/sec 712320 Mtexels/sec
Pixel Rate 246960 Mpixels/sec 356160 Mpixels/sec
Unified Shaders 9728 6144
Texture Mapping Units 304 384
Render Output Units 112 192
Bus Type GDDR6X GDDR6
Bus Width 256-bit 384-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 information (counted in megabytes per second) that can be moved past the external memory interface within a second. It's calculated by multiplying the card's bus width by the speed of its memory. If the card has DDR memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed in one second. This number is worked out by multiplying the total amount of texture units by the core speed of the chip. The better 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 chip could possibly record to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

Hide Prices

GeForce RTX 4080

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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