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GeForce RTX 3090 vs GeForce RTX 4090

Intro

The GeForce RTX 3090 comes with core clock speeds of 1395 MHz on the GPU, and 1219 MHz on the 24576 MB of GDDR6X memory. It features 10496 SPUs along with 328 Texture Address Units and 112 ROPs.

Compare those specifications to the GeForce RTX 4090, which comes with a core clock speed of 2235 MHz and a GDDR6X memory speed of 1325 MHz. It also features a 384-bit bus, and makes use of a 4 nm design. It is made up of 16384 SPUs, 512 Texture Address Units, and 176 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce RTX 3090 350 Watts
GeForce RTX 4090 450 Watts
Difference: 100 Watts (29%)

Memory Bandwidth

The GeForce RTX 4090 should in theory be just a bit faster than the GeForce RTX 3090 in general. (explain)

GeForce RTX 4090 1042432 MB/sec
GeForce RTX 3090 958668 MB/sec
Difference: 83764 (9%)

Texel Rate

The GeForce RTX 4090 is quite a bit (more or less 150%) faster with regards to anisotropic filtering than the GeForce RTX 3090. (explain)

GeForce RTX 4090 1144320 Mtexels/sec
GeForce RTX 3090 457560 Mtexels/sec
Difference: 686760 (150%)

Pixel Rate

The GeForce RTX 4090 is much (approximately 152%) more effective at FSAA than the GeForce RTX 3090, and also should be capable of handling higher resolutions better. (explain)

GeForce RTX 4090 393360 Mpixels/sec
GeForce RTX 3090 156240 Mpixels/sec
Difference: 237120 (152%)

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

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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 3090 GeForce RTX 4090
Manufacturer nVidia nVidia
Year September 2020 October 2022
Code Name GA102-300-A1 AD102
Memory 24576 MB 24576 MB
Core Speed 1395 MHz 2235 MHz
Memory Speed 1219 GB/s 1325 GB/s
Power (Max TDP) 350 watts 450 watts
Bandwidth 958668 MB/sec 1042432 MB/sec
Texel Rate 457560 Mtexels/sec 1144320 Mtexels/sec
Pixel Rate 156240 Mpixels/sec 393360 Mpixels/sec
Unified Shaders 10496 16384
Texture Mapping Units 328 512
Render Output Units 112 176
Bus Type GDDR6X GDDR6X
Bus Width 384-bit 384-bit
Fab Process 8 nm 4 nm
Transistors 28300 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: Bandwidth is the largest amount of information (measured in megabytes per second) that can be transferred over the external memory interface in one second. It is calculated by multiplying the interface width by its memory speed. In the case of DDR type memory, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, 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 number of texture map elements (texels) that are applied per second. This number is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the video card will be at handling 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 the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

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GeForce RTX 3090

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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