Radeon R9 390X 8G vs Radeon RX 5600 XT

Intro

Compare those specs to the Radeon RX 5600 XT, which has core clock speeds of 1375 MHz on the GPU, and 1500 MHz on the 6144 MB of GDDR6 memory. It features 2304 SPUs as well as 144 TAUs and 64 ROPs.

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

The Radeon R9 390X 8G should in theory be a small bit faster than the Radeon RX 5600 XT overall. (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 little bit (approximately 7%) better at 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 will be quite a bit (about 31%) faster with regards to full screen anti-aliasing than the Radeon R9 390X 8G, and also capable of handling higher resolutions without slowing down too much. (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: Memory bandwidth is the largest amount of information (in units of MB per second) that can be transferred over the external memory interface in a second. The number is calculated by multiplying the interface width by its memory speed. In the case of DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, 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 number is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The better the texel rate, the better the graphics card will be at handling 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 a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines by the the card's 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 is also dependant on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.