Radeon R9 M390X vs Radeon RX 550

Intro

Compare those specs to the Radeon RX 550, which comes with core clock speeds of 1100 MHz on the GPU, and 1750 MHz on the 2048 MB of GDDR5 RAM. It features 512 SPUs as well as 32 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 550		50 Watts
Radeon R9 M390X		125 Watts
	Difference: 75 Watts (150%)

Memory Bandwidth

In theory, the Radeon R9 M390X should be quite a bit faster than the Radeon RX 550 overall. (explain)

Radeon R9 M390X		160000 MB/sec
Radeon RX 550		114688 MB/sec
	Difference: 45312 (40%)

Texel Rate

The Radeon R9 M390X should be a lot (about 163%) faster with regards to anisotropic filtering than the Radeon RX 550. (explain)

Radeon R9 M390X		92544 Mtexels/sec
Radeon RX 550		35200 Mtexels/sec
	Difference: 57344 (163%)

Pixel Rate

The Radeon R9 M390X is much (more or less 31%) better at full screen anti-aliasing than the Radeon RX 550, and also will be capable of handling higher screen resolutions more effectively. (explain)

Radeon R9 M390X		23136 Mpixels/sec
Radeon RX 550		17600 Mpixels/sec
	Difference: 5536 (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 maximum amount of data (measured in MB per second) that can be moved over the external memory interface in a second. It's worked out by multiplying the bus width by its memory clock speed. If the card has DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster 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 are processed in one second. This is worked out by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines by the the core 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 rate is also dependant on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.