Radeon R9 390X 8G vs Radeon RX 5700 XT

Intro

Compare those specifications to the Radeon RX 5700 XT, which comes with clock speeds of 1605 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		225 Watts
Radeon R9 390X 8G		275 Watts
	Difference: 50 Watts (22%)

Memory Bandwidth

As far as performance goes, the Radeon RX 5700 XT should theoretically be a little bit superior to the Radeon R9 390X 8G in general. (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 will be much (approximately 39%) more effective at texture 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 will be a lot (about 53%) more effective at AA than the Radeon R9 390X 8G, and also able to handle higher screen resolutions more effectively. (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

Specifications

Memory Bandwidth: Bandwidth is the largest amount of information (counted in megabytes per second) that can be transported over the external memory interface in a second. The number is calculated by multiplying the card's bus width by its memory speed. If it uses DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. 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 potential to reach the maximum fill rate.