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GeForce RTX 4080 vs GeForce RTX 4090

Intro

The GeForce RTX 4080 features core clock speeds of 2205 MHz on the GPU, and 1400 MHz on the 16384 MB of GDDR6X RAM. It features 9728 SPUs along with 304 Texture Address Units and 112 ROPs.

Compare all that to the GeForce RTX 4090, which uses a 4 nm design. nVidia has set the core frequency at 2235 MHz. The GDDR6X RAM is set to run at a frequency of 1325 MHz on this specific card. It features 16384 SPUs along with 512 Texture Address Units and 176 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce RTX 4080 320 Watts
GeForce RTX 4090 450 Watts
Difference: 130 Watts (41%)

Memory Bandwidth

Theoretically speaking, the GeForce RTX 4090 should perform much faster than the GeForce RTX 4080 overall. (explain)

GeForce RTX 4090 1042432 MB/sec
GeForce RTX 4080 734003 MB/sec
Difference: 308429 (42%)

Texel Rate

The GeForce RTX 4090 should be quite a bit (more or less 71%) more effective at AF than the GeForce RTX 4080. (explain)

GeForce RTX 4090 1144320 Mtexels/sec
GeForce RTX 4080 670320 Mtexels/sec
Difference: 474000 (71%)

Pixel Rate

The GeForce RTX 4090 is quite a bit (more or less 59%) more effective at AA than the GeForce RTX 4080, and will be capable of handling higher screen resolutions better. (explain)

GeForce RTX 4090 393360 Mpixels/sec
GeForce RTX 4080 246960 Mpixels/sec
Difference: 146400 (59%)

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

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GeForce RTX 4090

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 4080 GeForce RTX 4090
Manufacturer nVidia nVidia
Year November 2022 October 2022
Code Name AD103-300-A1 AD102
Memory 16384 MB 24576 MB
Core Speed 2205 MHz 2235 MHz
Memory Speed 1400 GB/s 1325 GB/s
Power (Max TDP) 320 watts 450 watts
Bandwidth 734003 MB/sec 1042432 MB/sec
Texel Rate 670320 Mtexels/sec 1144320 Mtexels/sec
Pixel Rate 246960 Mpixels/sec 393360 Mpixels/sec
Unified Shaders 9728 16384
Texture Mapping Units 304 512
Render Output Units 112 176
Bus Type GDDR6X GDDR6X
Bus Width 256-bit 384-bit
Fab Process 4 nm 4 nm
Transistors 45900 million 76300 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 (measured in megabytes per second) that can be transferred over the external memory interface in a second. It is calculated by multiplying the interface width by its memory clock speed. If the card has DDR memory, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, 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 amount of texture map elements (texels) that can be processed per second. This number is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The higher this number, the better the graphics card will be at handling 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 graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also 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, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

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GeForce RTX 4080

Amazon.com

Check prices at:

GeForce RTX 4090

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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