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Radeon R9 390 8G vs Radeon RX 5600 XT

Intro

The Radeon R9 390 8G has a GPU clock speed of 1000 MHz, and the 8192 MB of GDDR5 memory runs at 1500 MHz through a 512-bit bus. It also features 2560 SPUs, 160 TAUs, and 64 ROPs.

Compare those specs to the Radeon RX 5600 XT, which makes use of a 7 nm design. AMD has set the core frequency at 1375 MHz. The GDDR6 memory runs at a frequency of 14000 MHz on this specific card. It features 2304 SPUs along with 144 TAUs and 64 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 5600 XT 160 Watts
Radeon R9 390 8G 275 Watts
Difference: 115 Watts (72%)

Memory Bandwidth

The Radeon R9 390 8G should in theory be a small bit faster than the Radeon RX 5600 XT in general. (explain)

Radeon R9 390 8G 384000 MB/sec
Radeon RX 5600 XT 344064 MB/sec
Difference: 39936 (12%)

Texel Rate

The Radeon RX 5600 XT is much (more or less 24%) better at texture filtering than the Radeon R9 390 8G. (explain)

Radeon RX 5600 XT 198000 Mtexels/sec
Radeon R9 390 8G 160000 Mtexels/sec
Difference: 38000 (24%)

Pixel Rate

The Radeon RX 5600 XT is a lot (about 38%) faster with regards to anti-aliasing than the Radeon R9 390 8G, and also should be able to handle higher screen resolutions more effectively. (explain)

Radeon RX 5600 XT 88000 Mpixels/sec
Radeon R9 390 8G 64000 Mpixels/sec
Difference: 24000 (38%)

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 390 8G

Amazon.com

Check prices at:

Radeon RX 5600 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 390 8G Radeon RX 5600 XT
Manufacturer AMD AMD
Year June 2015 January 2020
Code Name Grenada PRO Navi 10 XLE
Memory 8192 MB 6144 MB
Core Speed 1000 MHz 1375 MHz
Memory Speed 6000 MHz 28000 GB/s
Power (Max TDP) 275 watts 160 watts
Bandwidth 384000 MB/sec 344064 MB/sec
Texel Rate 160000 Mtexels/sec 198000 Mtexels/sec
Pixel Rate 64000 Mpixels/sec 88000 Mpixels/sec
Unified Shaders 2560 2304
Texture Mapping Units 160 144
Render Output Units 64 64
Bus Type GDDR5 GDDR6
Bus Width 512-bit 192-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 (measured in MB per second) that can be moved over the external memory interface in one second. It is worked out by multiplying the card's interface width by its memory clock speed. In the case of DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied per second. This number is calculated by multiplying the total texture units by the core speed of the chip. The higher this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly write to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

Hide Prices

Radeon R9 390 8G

Amazon.com

Check prices at:

Radeon RX 5600 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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