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GeForce RTX 2080 vs Radeon R9 390X 8G

Intro

The GeForce RTX 2080 uses a 12 nm design. nVidia has set the core speed at 1515 MHz. The GDDR6 memory runs at a frequency of 14 MHz on this model. It features 2944 SPUs along with 184 Texture Address Units and 64 Rasterization Operator Units.

Compare those specs to the Radeon R9 390X 8G, which makes use of a 28 nm design. AMD has set the core frequency at 1050 MHz. The GDDR5 memory is set to run at a speed of 1500 MHz on this particular model. It features 2816 SPUs as well as 176 TAUs and 64 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce RTX 2080 215 Watts
Radeon R9 390X 8G 275 Watts
Difference: 60 Watts (28%)

Memory Bandwidth

In theory, the GeForce RTX 2080 should be just a bit faster than the Radeon R9 390X 8G overall. (explain)

GeForce RTX 2080 458752 MB/sec
Radeon R9 390X 8G 384000 MB/sec
Difference: 74752 (19%)

Texel Rate

The GeForce RTX 2080 is much (more or less 51%) faster with regards to anisotropic filtering than the Radeon R9 390X 8G. (explain)

GeForce RTX 2080 278760 Mtexels/sec
Radeon R9 390X 8G 184800 Mtexels/sec
Difference: 93960 (51%)

Pixel Rate

The GeForce RTX 2080 will be quite a bit (about 44%) better at AA than the Radeon R9 390X 8G, and also able to handle higher screen resolutions better. (explain)

GeForce RTX 2080 96960 Mpixels/sec
Radeon R9 390X 8G 67200 Mpixels/sec
Difference: 29760 (44%)

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

Display Prices

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GeForce RTX 2080

Amazon.com

Radeon R9 390X 8G

Amazon.com

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 2080 Radeon R9 390X 8G
Manufacturer nVidia AMD
Year September 2018 June 2015
Code Name TU104-400A-A1 Grenada XT
Memory 8192 MB 8192 MB
Core Speed 1515 MHz 1050 MHz
Memory Speed 14 GB/s 6000 MHz
Power (Max TDP) 215 watts 275 watts
Bandwidth 458752 MB/sec 384000 MB/sec
Texel Rate 278760 Mtexels/sec 184800 Mtexels/sec
Pixel Rate 96960 Mpixels/sec 67200 Mpixels/sec
Unified Shaders 2944 2816
Texture Mapping Units 184 176
Render Output Units 64 64
Bus Type GDDR6 GDDR5
Bus Width 256-bit 512-bit
Fab Process 12 nm 28 nm
Transistors (Unknown) million 6200 million
Bus PCIe 3.0 x16 PCIe 3.0 ×16
DirectX Version DirectX 12 DirectX 12.0
OpenGL Version OpenGL 4.6 OpenGL 4.5

Memory Bandwidth: Bandwidth is the maximum amount of data (measured in megabytes per second) that can be transported across the external memory interface in one second. It is worked out by multiplying the card's bus width by the speed of its memory. If it uses DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This is worked out by multiplying the total number of texture units by the core clock speed of the chip. The higher the texel rate, the better the graphics 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 most pixels that the graphics chip can possibly write to its 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 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, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

Hide Prices

GeForce RTX 2080

Amazon.com

Radeon R9 390X 8G

Amazon.com

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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