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GeForce RTX 3090 vs Radeon RX 7900 XTX

Intro

The GeForce RTX 3090 uses a 8 nm design. nVidia has clocked the core frequency at 1395 MHz. The GDDR6X RAM is set to run at a speed of 1219 MHz on this model. It features 10496 SPUs as well as 328 TAUs and 112 ROPs.

Compare all of that to the Radeon RX 7900 XTX, which comes with core speeds of 1855 MHz on the GPU, and 2500 MHz on the 24576 MB of GDDR6 memory. 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 3090 350 Watts
Radeon RX 7900 XTX 355 Watts
Difference: 5 Watts (1%)

Memory Bandwidth

Performance-wise, the Radeon RX 7900 XTX should in theory be a small bit superior to the GeForce RTX 3090 overall. (explain)

Radeon RX 7900 XTX 983040 MB/sec
GeForce RTX 3090 958668 MB/sec
Difference: 24372 (3%)

Texel Rate

The Radeon RX 7900 XTX is a lot (about 56%) faster with regards to AF than the GeForce RTX 3090. (explain)

Radeon RX 7900 XTX 712320 Mtexels/sec
GeForce RTX 3090 457560 Mtexels/sec
Difference: 254760 (56%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon RX 7900 XTX is the winner, and very much so. (explain)

Radeon RX 7900 XTX 356160 Mpixels/sec
GeForce RTX 3090 156240 Mpixels/sec
Difference: 199920 (128%)

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 3090

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 3090 Radeon RX 7900 XTX
Manufacturer nVidia AMD
Year September 2020 December 2022
Code Name GA102-300-A1 Navi 31 XTX
Memory 24576 MB 24576 MB
Core Speed 1395 MHz 1855 MHz
Memory Speed 1219 GB/s 2500 GB/s
Power (Max TDP) 350 watts 355 watts
Bandwidth 958668 MB/sec 983040 MB/sec
Texel Rate 457560 Mtexels/sec 712320 Mtexels/sec
Pixel Rate 156240 Mpixels/sec 356160 Mpixels/sec
Unified Shaders 10496 6144
Texture Mapping Units 328 384
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 megabytes per second) that can be transferred over the external memory interface in one second. It is worked out by multiplying the interface width by the speed of its memory. If the card has DDR memory, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the video 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 Render Output Units by the clock 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 is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

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GeForce RTX 3090

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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