Radeon R9 M395X vs Radeon RX 550

Intro

Compare that to the Radeon RX 550, which makes use of a 14 nm design. AMD has set the core frequency at 1100 MHz. The GDDR5 memory is set to run at a speed of 1750 MHz on this card. It features 512 SPUs along with 32 Texture Address Units and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 550		50 Watts
Radeon R9 M395X		125 Watts
	Difference: 75 Watts (150%)

Memory Bandwidth

In theory, the Radeon R9 M395X should be 40% faster than the Radeon RX 550 in general, due to its greater data rate. (explain)

Radeon R9 M395X		160000 MB/sec
Radeon RX 550		114688 MB/sec
	Difference: 45312 (40%)

Texel Rate

The Radeon R9 M395X should be quite a bit (more or less 163%) faster with regards to AF than the Radeon RX 550. (explain)

Radeon R9 M395X		92544 Mtexels/sec
Radeon RX 550		35200 Mtexels/sec
	Difference: 57344 (163%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon R9 M395X is a better choice, by a large margin. (explain)

Radeon R9 M395X		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 max amount of data (counted in megabytes per second) that can be transported across the external memory interface in a second. It is calculated by multiplying the interface width by the speed of its memory. In the case of DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Raster Operations Pipelines by the the core 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 output rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.