GeForce GTX 980 vs Radeon RX 6800

Intro

Compare those specifications to the Radeon RX 6800, which has GPU clock speed of 1700 MHz, and 16384 MB of GDDR6 RAM set to run at 2000 MHz through a 256-bit bus. It also is made up of 3840 Stream Processors, 240 TAUs, and 96 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 980		165 Watts
Radeon RX 6800		250 Watts
	Difference: 85 Watts (52%)

Memory Bandwidth

The Radeon RX 6800, in theory, should be a lot faster than the GeForce GTX 980 overall. (explain)

Radeon RX 6800		524288 MB/sec
GeForce GTX 980		224000 MB/sec
	Difference: 300288 (134%)

Texel Rate

The Radeon RX 6800 is much (about 183%) better at anisotropic filtering than the GeForce GTX 980. (explain)

Radeon RX 6800		408000 Mtexels/sec
GeForce GTX 980		144128 Mtexels/sec
	Difference: 263872 (183%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon RX 6800 is a better choice, and very much so. (explain)

Radeon RX 6800		163200 Mpixels/sec
GeForce GTX 980		72064 Mpixels/sec
	Difference: 91136 (126%)

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 data (measured in MB per second) that can be transferred over the external memory interface within a second. It is calculated by multiplying the card's bus width by its memory speed. If it uses DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends 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.