GeForce GTX 980M vs Radeon RX 6900 XT

Intro

Compare those specs to the Radeon RX 6900 XT, which has a GPU core clock speed of 1825 MHz, and 16384 MB of GDDR6 memory set to run at 2000 MHz through a 256-bit bus. It also is comprised of 5120 Stream Processors, 320 TAUs, and 128 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 980M		100 Watts
Radeon RX 6900 XT		300 Watts
	Difference: 200 Watts (200%)

Memory Bandwidth

Theoretically speaking, the Radeon RX 6900 XT is 310% quicker than the GeForce GTX 980M overall, due to its greater bandwidth. (explain)

Radeon RX 6900 XT		524288 MB/sec
GeForce GTX 980M		128000 MB/sec
	Difference: 396288 (310%)

Texel Rate

The Radeon RX 6900 XT is quite a bit (approximately 486%) better at anisotropic filtering than the GeForce GTX 980M. (explain)

Radeon RX 6900 XT		584000 Mtexels/sec
GeForce GTX 980M		99648 Mtexels/sec
	Difference: 484352 (486%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon RX 6900 XT is the winner, and very much so. (explain)

Radeon RX 6900 XT		233600 Mpixels/sec
GeForce GTX 980M		66432 Mpixels/sec
	Difference: 167168 (252%)

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 maximum amount of information (in units of megabytes per second) that can be moved past the external memory interface in a second. It's worked out by multiplying the card's bus width by its memory clock speed. If the card has DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, the faster 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 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 better this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.