GeForce GTX 980M vs Radeon RX 5500 XT

Intro

Compare those specifications to the Radeon RX 5500 XT, which features a GPU core clock speed of 1717 MHz, and 8192 MB of GDDR6 RAM set to run at 1750 MHz through a 128-bit bus. It also is made up of 1408 SPUs, 88 TAUs, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 980M		100 Watts
Radeon RX 5500 XT		130 Watts
	Difference: 30 Watts (30%)

Memory Bandwidth

Performance-wise, the Radeon RX 5500 XT should theoretically be quite a bit better than the GeForce GTX 980M overall. (explain)

Radeon RX 5500 XT		229376 MB/sec
GeForce GTX 980M		128000 MB/sec
	Difference: 101376 (79%)

Texel Rate

The Radeon RX 5500 XT should be much (more or less 52%) more effective at anisotropic filtering than the GeForce GTX 980M. (explain)

Radeon RX 5500 XT		151096 Mtexels/sec
GeForce GTX 980M		99648 Mtexels/sec
	Difference: 51448 (52%)

Pixel Rate

The GeForce GTX 980M should be much (about 21%) more effective at FSAA than the Radeon RX 5500 XT, and should be capable of handling higher resolutions more effectively. (explain)

GeForce GTX 980M		66432 Mpixels/sec
Radeon RX 5500 XT		54944 Mpixels/sec
	Difference: 11488 (21%)

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 largest amount of information (in units of megabytes per second) that can be transported across the external memory interface in a second. It is calculated by multiplying the bus width by its memory speed. If it uses DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed per second. This is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The higher 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 chip can possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends 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.