Radeon R9 M390X vs Radeon RX 5500 XT

Intro

Compare all that to the Radeon RX 5500 XT, which uses a 7 nm design. AMD has set the core speed at 1717 MHz. The GDDR6 RAM runs at a speed of 1750 MHz on this particular model. It features 1408 SPUs along with 88 TAUs and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M390X		125 Watts
Radeon RX 5500 XT		130 Watts
	Difference: 5 Watts (4%)

Memory Bandwidth

As far as performance goes, the Radeon RX 5500 XT should in theory be quite a bit superior to the Radeon R9 M390X in general. (explain)

Radeon RX 5500 XT		229376 MB/sec
Radeon R9 M390X		160000 MB/sec
	Difference: 69376 (43%)

Texel Rate

The Radeon RX 5500 XT will be much (about 63%) better at anisotropic filtering than the Radeon R9 M390X. (explain)

Radeon RX 5500 XT		151096 Mtexels/sec
Radeon R9 M390X		92544 Mtexels/sec
	Difference: 58552 (63%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon RX 5500 XT is a better choice, by far. (explain)

Radeon RX 5500 XT		54944 Mpixels/sec
Radeon R9 M390X		23136 Mpixels/sec
	Difference: 31808 (137%)

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 largest amount of information (in units of megabytes per second) that can be moved over the external memory interface in one second. The number is calculated by multiplying the card's bus width by its memory speed. If it uses DDR type RAM, it 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 can be applied in one second. This is calculated by multiplying the total texture units by the core clock speed of the chip. The higher this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly write to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.