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GeForce RTX 3080 12 GB vs GeForce RTX 3090

Intro

The GeForce RTX 3080 12 GB has a core clock frequency of 1260 MHz and a GDDR6X memory frequency of 1188 MHz. It also uses a 384-bit memory bus, and makes use of a 8 nm design. It is made up of 8960 SPUs, 280 Texture Address Units, and 112 Raster Operation Units.

Compare that to the GeForce RTX 3090, which has core 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.

Display Graphs

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Power Usage and Theoretical Benchmarks

Both cards have the same power consumption.

Memory Bandwidth

As far as performance goes, the GeForce RTX 3090 should theoretically be a small bit superior to the GeForce RTX 3080 12 GB in general. (explain)

GeForce RTX 3090 958668 MB/sec
GeForce RTX 3080 12 GB 934298 MB/sec
Difference: 24370 (3%)

Texel Rate

The GeForce RTX 3090 will be quite a bit (more or less 30%) faster with regards to AF than the GeForce RTX 3080 12 GB. (explain)

GeForce RTX 3090 457560 Mtexels/sec
GeForce RTX 3080 12 GB 352800 Mtexels/sec
Difference: 104760 (30%)

Pixel Rate

If using a high resolution is important to you, then the GeForce RTX 3090 is the winner, not by a very large margin though. (explain)

GeForce RTX 3090 156240 Mpixels/sec
GeForce RTX 3080 12 GB 141120 Mpixels/sec
Difference: 15120 (11%)

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 3080 12 GB

Amazon.com

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GeForce RTX 3090

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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 3080 12 GB GeForce RTX 3090
Manufacturer nVidia nVidia
Year January 2022 September 2020
Code Name GA102-220-A1 GA102-300-A1
Memory 12288 MB 24576 MB
Core Speed 1260 MHz 1395 MHz
Memory Speed 1188 GB/s 1219 GB/s
Power (Max TDP) 350 watts 350 watts
Bandwidth 934298 MB/sec 958668 MB/sec
Texel Rate 352800 Mtexels/sec 457560 Mtexels/sec
Pixel Rate 141120 Mpixels/sec 156240 Mpixels/sec
Unified Shaders 8960 10496
Texture Mapping Units 280 328
Render Output Units 112 112
Bus Type GDDR6X GDDR6X
Bus Width 384-bit 384-bit
Fab Process 8 nm 8 nm
Transistors 28300 million 28300 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 max amount of data (counted in MB per second) that can be transferred across the external memory interface in one second. The number is worked out by multiplying the bus width by the speed of its memory. If it uses DDR type RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This number is worked out by multiplying the total texture units of the card by the core speed of the chip. The better this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the most pixels the video card can possibly write to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.

Display Prices

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GeForce RTX 3080 12 GB

Amazon.com

Check prices at:

GeForce RTX 3090

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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