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GeForce RTX 3080 12 GB vs Radeon R9 M395X

Intro

The GeForce RTX 3080 12 GB has core clock speeds of 1260 MHz on the GPU, and 1188 MHz on the 12288 MB of GDDR6X memory. It features 8960 SPUs as well as 280 TAUs and 112 ROPs.

Compare those specifications to the Radeon R9 M395X, which comes with a GPU core clock speed of 723 MHz, and 4096 MB of GDDR5 RAM set to run at 1250 MHz through a 256-bit bus. It also is comprised of 2048 Stream Processors, 128 TAUs, and 32 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M395X 125 Watts
GeForce RTX 3080 12 GB 350 Watts
Difference: 225 Watts (180%)

Memory Bandwidth

Theoretically speaking, the GeForce RTX 3080 12 GB will be 484% faster than the Radeon R9 M395X overall, due to its greater bandwidth. (explain)

GeForce RTX 3080 12 GB 934298 MB/sec
Radeon R9 M395X 160000 MB/sec
Difference: 774298 (484%)

Texel Rate

The GeForce RTX 3080 12 GB is much (more or less 281%) faster with regards to AF than the Radeon R9 M395X. (explain)

GeForce RTX 3080 12 GB 352800 Mtexels/sec
Radeon R9 M395X 92544 Mtexels/sec
Difference: 260256 (281%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce RTX 3080 12 GB is a better choice, by a large margin. (explain)

GeForce RTX 3080 12 GB 141120 Mpixels/sec
Radeon R9 M395X 23136 Mpixels/sec
Difference: 117984 (510%)

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

Check prices at:

Radeon R9 M395X

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 3080 12 GB Radeon R9 M395X
Manufacturer nVidia AMD
Year January 2022 2015
Code Name GA102-220-A1 Tonga
Memory 12288 MB 4096 MB
Core Speed 1260 MHz 723 MHz
Memory Speed 1188 GB/s 5000 MHz
Power (Max TDP) 350 watts 125 watts
Bandwidth 934298 MB/sec 160000 MB/sec
Texel Rate 352800 Mtexels/sec 92544 Mtexels/sec
Pixel Rate 141120 Mpixels/sec 23136 Mpixels/sec
Unified Shaders 8960 2048
Texture Mapping Units 280 128
Render Output Units 112 32
Bus Type GDDR6X GDDR5
Bus Width 384-bit 256-bit
Fab Process 8 nm 28 nm
Transistors 28300 million (Unknown) million
Bus PCIe 4.0 x16 PCIe 3.0 x16
DirectX Version DirectX 12 DirectX 12
OpenGL Version OpenGL 4.6 OpenGL 4.3

Memory Bandwidth: Memory bandwidth is the largest amount of information (counted in MB per second) that can be transported past the external memory interface in a second. The number is worked out by multiplying the interface width by its memory clock speed. In the case of DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This figure is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The better this number, 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 number of pixels the video card could 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 the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.

Display Prices

Hide Prices

GeForce RTX 3080 12 GB

Amazon.com

Check prices at:

Radeon R9 M395X

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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