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Radeon R9 390X 8G vs Radeon RX 5700 XT

Intro

The Radeon R9 390X 8G features a clock frequency of 1050 MHz and a GDDR5 memory frequency of 1500 MHz. It also makes use of a 512-bit bus, and makes use of a 28 nm design. It features 2816 SPUs, 176 TAUs, and 64 ROPs.

Compare all that to the Radeon RX 5700 XT, which makes use of a 7 nm design. AMD has set the core frequency at 1605 MHz. The GDDR6 memory runs at a speed of 1750 MHz on this card. It features 2560 SPUs as well as 160 Texture Address Units and 64 Rasterization Operator 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

The Radeon RX 5700 XT should in theory be a little bit faster than the Radeon R9 390X 8G overall. (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 is a lot (more or less 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

The Radeon RX 5700 XT should be a lot (about 53%) faster with regards to anti-aliasing than the Radeon R9 390X 8G, and also should be capable of handling higher resolutions better. (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 3500 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 data (in units of megabytes per second) that can be moved over the external memory interface in a second. It is calculated by multiplying the card's bus width by its memory clock speed. If the card has DDR memory, it must be multiplied by 2 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 number of texture map elements (texels) that are applied in one second. This figure is worked out by multiplying the total texture units by the core speed of the chip. The higher the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly write to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum 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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