Radeon R9 390 8G vs Radeon RX 5700 XT 50th Anniversary Edition

Intro

Compare those specifications to the Radeon RX 5700 XT 50th Anniversary Edition, which comes with core clock speeds of 1680 MHz on the GPU, and 1750 MHz on the 8096 MB of GDDR6 memory. It features 2560 SPUs as well as 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 50th Anniversary Edition		235 Watts
Radeon R9 390 8G		275 Watts
	Difference: 40 Watts (17%)

Memory Bandwidth

As far as performance goes, the Radeon RX 5700 XT 50th Anniversary Edition should theoretically be a small bit better than the Radeon R9 390 8G in general. (explain)

Radeon RX 5700 XT 50th Anniversary Edition		458752 MB/sec
Radeon R9 390 8G		384000 MB/sec
	Difference: 74752 (19%)

Texel Rate

The Radeon RX 5700 XT 50th Anniversary Edition is a lot (more or less 68%) more effective at AF than the Radeon R9 390 8G. (explain)

Radeon RX 5700 XT 50th Anniversary Edition		268800 Mtexels/sec
Radeon R9 390 8G		160000 Mtexels/sec
	Difference: 108800 (68%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon RX 5700 XT 50th Anniversary Edition is the winner, by far. (explain)

Radeon RX 5700 XT 50th Anniversary Edition		107520 Mpixels/sec
Radeon R9 390 8G		64000 Mpixels/sec
	Difference: 43520 (68%)

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

Specifications

Memory Bandwidth: Bandwidth is the max amount of information (measured in MB per second) that can be transferred past the external memory interface in a second. It is worked out by multiplying the card's bus width by its memory clock speed. If it uses DDR RAM, it must be multiplied by 2 again. If 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 higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed in one second. This figure is calculated by multiplying the total number of texture units 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 processed in a second.

Pixel Rate: Pixel rate is the most pixels that 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 colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.