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GeForce RTX 2080 vs Radeon R9 390X 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 RAM. It features 2944 SPUs along with 184 Texture Address Units and 64 ROPs.

Compare all of that to the Radeon R9 390X 8G, which features a core clock frequency of 1050 MHz and a GDDR5 memory speed of 1500 MHz. It also features a 512-bit bus, and uses a 28 nm design. It is comprised of 2816 SPUs, 176 Texture Address Units, 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

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

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

Texel Rate

The GeForce RTX 2080 should be much (about 51%) better at AF 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 is quite a bit (about 44%) more effective at anti-aliasing than the Radeon R9 390X 8G, and 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: Memory bandwidth is the maximum amount of information (in units of megabytes per second) that can be transported across the external memory interface in a second. The number is worked out by multiplying the bus width by its memory clock speed. In the case of DDR type RAM, the result should be multiplied by 2 again. If 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 number of texture map elements (texels) that can be applied per second. This number is calculated by multiplying the total number of texture units by the core speed of the chip. The better the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly record to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - aka 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 bandwidth is, the lower the potential 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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