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Radeon R9 390 8G vs Radeon RX 5600 XT

Intro

The Radeon R9 390 8G has a GPU core speed of 1000 MHz, and the 8192 MB of GDDR5 memory is set to run at 1500 MHz through a 512-bit bus. It also features 2560 SPUs, 160 Texture Address Units, and 64 Raster Operation Units.

Compare that to the Radeon RX 5600 XT, which features core clock speeds of 1375 MHz on the GPU, and 14000 MHz on the 6144 MB of GDDR6 RAM. It features 2304 SPUs as well as 144 TAUs and 64 ROPs.

Display Graphs

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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

As far as performance goes, the Radeon R9 390 8G should in theory be just a bit better than the Radeon RX 5600 XT overall. (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 will be a lot (more or less 24%) faster with regards to AF 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

If running with high levels of AA is important to you, then the Radeon RX 5600 XT is a better choice, by far. (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 data (counted in megabytes per second) that can be moved over the external memory interface within a second. The number is worked out by multiplying the interface width by the speed of its memory. In the case of DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's 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 texture map elements (texels) that are applied in one second. This is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The better 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 graphics card could possibly write to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on many other factors, especially 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 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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