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Radeon R9 390 8G vs Radeon RX 5700 XT

Intro

The Radeon R9 390 8G makes use of a 28 nm design. AMD has clocked the core speed at 1000 MHz. The GDDR5 memory is set to run at a speed of 1500 MHz on this specific model. It features 2560 SPUs as well as 160 Texture Address Units and 64 Rasterization Operator Units.

Compare those specs to the Radeon RX 5700 XT, which comes with clock speeds of 1605 MHz on the GPU, and 14000 MHz on the 8096 MB of GDDR6 memory. It features 2560 SPUs along with 160 Texture Address Units and 64 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

As far as performance goes, the Radeon RX 5700 XT should in theory be a little bit superior to the Radeon R9 390 8G overall. (explain)

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

Texel Rate

The Radeon RX 5700 XT will be a lot (more or less 61%) more effective at AF than the Radeon R9 390 8G. (explain)

Radeon RX 5700 XT 256800 Mtexels/sec
Radeon R9 390 8G 160000 Mtexels/sec
Difference: 96800 (61%)

Pixel Rate

The Radeon RX 5700 XT will be quite a bit (more or less 61%) more effective at anti-aliasing than the Radeon R9 390 8G, and also should be capable of handling higher screen resolutions while still performing well. (explain)

Radeon RX 5700 XT 102720 Mpixels/sec
Radeon R9 390 8G 64000 Mpixels/sec
Difference: 38720 (61%)

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 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 390 8G Radeon RX 5700 XT
Manufacturer AMD AMD
Year June 2015 July 2019
Code Name Grenada PRO Navi 10
Memory 8192 MB 8096 MB
Core Speed 1000 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 160000 Mtexels/sec 256800 Mtexels/sec
Pixel Rate 64000 Mpixels/sec 102720 Mpixels/sec
Unified Shaders 2560 2560
Texture Mapping Units 160 160
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 max amount of information (in units of megabytes per second) that can be transported past the external memory interface in a second. It's worked out by multiplying the bus width by the speed of its memory. If it uses DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The higher this number, the better the graphics 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 most pixels that the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs 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, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

Hide Prices

Radeon R9 390 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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