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GeForce RTX 2080 vs Radeon R9 390 8G

Intro

The GeForce RTX 2080 features core clock speeds of 1515 MHz on the GPU, and 14 MHz on the 8192 MB of GDDR6 memory. It features 2944 SPUs as well as 184 Texture Address Units and 64 ROPs.

Compare those specifications to the Radeon R9 390 8G, which comes with GPU clock speed of 1000 MHz, and 8192 MB of GDDR5 memory running at 1500 MHz through a 512-bit bus. It also features 2560 SPUs, 160 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 390 8G 275 Watts
Difference: 60 Watts (28%)

Memory Bandwidth

Performance-wise, the GeForce RTX 2080 should in theory be a small bit better than the Radeon R9 390 8G in general. (explain)

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

Texel Rate

The GeForce RTX 2080 is quite a bit (more or less 74%) faster with regards to anisotropic filtering than the Radeon R9 390 8G. (explain)

GeForce RTX 2080 278760 Mtexels/sec
Radeon R9 390 8G 160000 Mtexels/sec
Difference: 118760 (74%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce RTX 2080 is a better choice, by far. (explain)

GeForce RTX 2080 96960 Mpixels/sec
Radeon R9 390 8G 64000 Mpixels/sec
Difference: 32960 (52%)

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 390 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 390 8G
Manufacturer nVidia AMD
Year September 2018 June 2015
Code Name TU104-400A-A1 Grenada PRO
Memory 8192 MB 8192 MB
Core Speed 1515 MHz 1000 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 160000 Mtexels/sec
Pixel Rate 96960 Mpixels/sec 64000 Mpixels/sec
Unified Shaders 2944 2560
Texture Mapping Units 184 160
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 information (counted in megabytes per second) that can be moved past the external memory interface in one second. The number is worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better 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 texture map elements (texels) that can be applied per second. This number is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The better the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly write to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

Hide Prices

GeForce RTX 2080

Amazon.com

Radeon R9 390 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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