Radeon R9 M390X vs Radeon RX 6500 XT

Intro

Compare all of that to the Radeon RX 6500 XT, which comes with GPU core speed of 2200 MHz, and 4096 MB of GDDR6 memory set to run at 2250 MHz through a 64-bit bus. It also features 1024 Stream Processors, 64 TAUs, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6500 XT		107 Watts
Radeon R9 M390X		125 Watts
	Difference: 18 Watts (17%)

Memory Bandwidth

The Radeon R9 M390X should in theory perform a little bit faster than the Radeon RX 6500 XT in general. (explain)

Radeon R9 M390X		160000 MB/sec
Radeon RX 6500 XT		147456 MB/sec
	Difference: 12544 (9%)

Texel Rate

The Radeon RX 6500 XT will be a lot (approximately 52%) faster with regards to texture filtering than the Radeon R9 M390X. (explain)

Radeon RX 6500 XT		140800 Mtexels/sec
Radeon R9 M390X		92544 Mtexels/sec
	Difference: 48256 (52%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon RX 6500 XT is superior to the Radeon R9 M390X, by a large margin. (explain)

Radeon RX 6500 XT		70400 Mpixels/sec
Radeon R9 M390X		23136 Mpixels/sec
	Difference: 47264 (204%)

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 MB per second) that can be transferred past the external memory interface within a second. It is worked out by multiplying the card's bus width by the speed of its memory. If it uses DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed in one second. This figure is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The better this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly record to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Render Output Units 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 rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.