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Radeon R9 390X 8G vs Radeon RX 5700 XT

Intro

The Radeon R9 390X 8G has a core clock frequency of 1050 MHz and a GDDR5 memory speed of 1500 MHz. It also makes use of a 512-bit bus, and uses a 28 nm design. It features 2816 SPUs, 176 Texture Address Units, and 64 Raster Operation Units.

Compare those specifications to the Radeon RX 5700 XT, which has GPU core speed of 1605 MHz, and 8096 MB of GDDR6 memory set to run at 14000 MHz through a 256-bit bus. It also features 2560 SPUs, 160 TAUs, and 64 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 5700 XT 225 Watts
Radeon R9 390X 8G 275 Watts
Difference: 50 Watts (22%)

Memory Bandwidth

Performance-wise, the Radeon RX 5700 XT should in theory be just a bit superior to the Radeon R9 390X 8G in general. (explain)

Radeon RX 5700 XT 458752 MB/sec
Radeon R9 390X 8G 384000 MB/sec
Difference: 74752 (19%)

Texel Rate

The Radeon RX 5700 XT should be quite a bit (about 39%) faster with regards to texture filtering than the Radeon R9 390X 8G. (explain)

Radeon RX 5700 XT 256800 Mtexels/sec
Radeon R9 390X 8G 184800 Mtexels/sec
Difference: 72000 (39%)

Pixel Rate

The Radeon RX 5700 XT is quite a bit (more or less 53%) better at FSAA than the Radeon R9 390X 8G, and also capable of handling higher resolutions without slowing down too much. (explain)

Radeon RX 5700 XT 102720 Mpixels/sec
Radeon R9 390X 8G 67200 Mpixels/sec
Difference: 35520 (53%)

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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Radeon R9 390X 8G

Amazon.com

Check prices at:

Radeon RX 5700 XT

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 Radeon R9 390X 8G Radeon RX 5700 XT
Manufacturer AMD AMD
Year June 2015 July 2019
Code Name Grenada XT Navi 10
Memory 8192 MB 8096 MB
Core Speed 1050 MHz 1605 MHz
Memory Speed 6000 MHz 28000 GB/s
Power (Max TDP) 275 watts 225 watts
Bandwidth 384000 MB/sec 458752 MB/sec
Texel Rate 184800 Mtexels/sec 256800 Mtexels/sec
Pixel Rate 67200 Mpixels/sec 102720 Mpixels/sec
Unified Shaders 2816 2560
Texture Mapping Units 176 160
Render Output Units 64 64
Bus Type GDDR5 GDDR6
Bus Width 512-bit 256-bit
Fab Process 28 nm 7 nm
Transistors 6200 million 10300 million
Bus PCIe 3.0 ×16 PCIe 4.0 ×16
DirectX Version DirectX 12.0 DirectX 12
OpenGL Version OpenGL 4.5 OpenGL 4.6

Memory Bandwidth: Memory bandwidth is the max amount of data (counted in megabytes per second) that can be transferred 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 type memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the bandwidth is, 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 amount of texture map elements (texels) that are processed in one second. This is worked out by multiplying the total texture units of the card by the core speed of the chip. The higher this number, the better the video card will be at 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 could possibly record to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

Hide Prices

Radeon R9 390X 8G

Amazon.com

Check prices at:

Radeon RX 5700 XT

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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