Radeon R9 390 8G vs Radeon RX 5600

Intro

Compare those specs to the Radeon RX 5600, which comes with core clock speeds of 1375 MHz on the GPU, and 1500 MHz on the 6144 MB of GDDR6 RAM. It features 2048 SPUs along with 128 Texture Address Units and 64 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 5600		150 Watts
Radeon R9 390 8G		275 Watts
	Difference: 125 Watts (83%)

Memory Bandwidth

The Radeon R9 390 8G should theoretically be much faster than the Radeon RX 5600 overall. (explain)

Radeon R9 390 8G		384000 MB/sec
Radeon RX 5600		294912 MB/sec
	Difference: 89088 (30%)

Texel Rate

The Radeon RX 5600 will be just a bit (more or less 10%) better at texture filtering than the Radeon R9 390 8G. (explain)

Radeon RX 5600		176000 Mtexels/sec
Radeon R9 390 8G		160000 Mtexels/sec
	Difference: 16000 (10%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon RX 5600 is the winner, by a large margin. (explain)

Radeon RX 5600		88000 Mpixels/sec
Radeon R9 390 8G		64000 Mpixels/sec
	Difference: 24000 (38%)

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 max amount of data (counted in MB per second) that can be transferred across the external memory interface within 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 it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed in one second. This figure 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 per second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as 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, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.