GeForce 820M vs Radeon RX 6900 XT

Intro

Compare that to the Radeon RX 6900 XT, which makes use of a 7 nm design. AMD has set the core frequency at 1825 MHz. The GDDR6 memory is set to run at a speed of 2000 MHz on this card. It features 5120 SPUs as well as 320 TAUs and 128 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 820M		15 Watts
Radeon RX 6900 XT		300 Watts
	Difference: 285 Watts (1900%)

Memory Bandwidth

The Radeon RX 6900 XT, in theory, should be much faster than the GeForce 820M overall. (explain)

Radeon RX 6900 XT		524288 MB/sec
GeForce 820M		16000 MB/sec
	Difference: 508288 (3177%)

Texel Rate

The Radeon RX 6900 XT is quite a bit (about 4976%) faster with regards to AF than the GeForce 820M. (explain)

Radeon RX 6900 XT		584000 Mtexels/sec
GeForce 820M		11504 Mtexels/sec
	Difference: 572496 (4976%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon RX 6900 XT is the winner, by a large margin. (explain)

Radeon RX 6900 XT		233600 Mpixels/sec
GeForce 820M		2876 Mpixels/sec
	Difference: 230724 (8022%)

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 (measured in megabytes per second) that can be transported across the external memory interface within a second. It's calculated by multiplying the interface width by the speed of its memory. If it uses DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly write to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. 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 many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.