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Radeon R9 390X 8G vs Radeon RX 5700 XT

Intro

The Radeon R9 390X 8G 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 card. It features 2816 SPUs along with 176 Texture Address Units and 64 Rasterization Operator Units.

Compare those specifications to the Radeon RX 5700 XT, which comes with GPU clock speed of 1605 MHz, and 8096 MB of GDDR6 RAM set to run at 14000 MHz through a 256-bit bus. It also is comprised of 2560 SPUs, 160 Texture Address Units, and 64 ROPs.

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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 theoretically be a small bit better than 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 will be much (about 39%) better at anisotropic 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

If running with a high resolution is important to you, then the Radeon RX 5700 XT is a better choice, by a large margin. (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: Bandwidth is the largest amount of information (in units of megabytes per second) that can be moved across the external memory interface in a second. It is calculated by multiplying the card's interface width by its memory clock speed. If it uses DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better 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 applied in one second. This number is worked out by multiplying the total amount of texture units of the card by the core 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 in one second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly write to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on quite a few 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

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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