Radeon R9 390X 8G vs Radeon RX 5600 XT

Intro

Compare those specifications to the Radeon RX 5600 XT, which comes with a clock speed of 1375 MHz and a GDDR6 memory frequency of 1500 MHz. It also makes use of a 192-bit bus, and uses a 7 nm design. It features 2304 SPUs, 144 Texture Address Units, and 64 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 5600 XT		160 Watts
Radeon R9 390X 8G		275 Watts
	Difference: 115 Watts (72%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 390X 8G will be 12% quicker than the Radeon RX 5600 XT overall, due to its greater data rate. (explain)

Radeon R9 390X 8G		384000 MB/sec
Radeon RX 5600 XT		344064 MB/sec
	Difference: 39936 (12%)

Texel Rate

The Radeon RX 5600 XT is a small bit (about 7%) faster with regards to AF than the Radeon R9 390X 8G. (explain)

Radeon RX 5600 XT		198000 Mtexels/sec
Radeon R9 390X 8G		184800 Mtexels/sec
	Difference: 13200 (7%)

Pixel Rate

The Radeon RX 5600 XT should be a lot (about 31%) faster with regards to full screen anti-aliasing than the Radeon R9 390X 8G, and also should be able to handle higher resolutions without losing too much performance. (explain)

Radeon RX 5600 XT		88000 Mpixels/sec
Radeon R9 390X 8G		67200 Mpixels/sec
	Difference: 20800 (31%)

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 maximum amount of data (counted in MB per second) that can be transported across the external memory interface within a second. It is worked out by multiplying the card's interface width by its memory clock speed. If it uses DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster 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 amount of texture map elements (texels) that are applied per second. This figure is worked out by multiplying the total amount 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 one second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly record to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.