GeForce 820M vs Radeon RX 560

Intro

Compare all that to the Radeon RX 560, which features a clock speed of 1175 MHz and a GDDR5 memory frequency of 1750 MHz. It also features a 128-bit memory bus, and uses a 14 nm design. It features 1024 SPUs, 64 TAUs, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 820M		15 Watts
Radeon RX 560		80 Watts
	Difference: 65 Watts (433%)

Memory Bandwidth

The Radeon RX 560 should theoretically be much faster than the GeForce 820M in general. (explain)

Radeon RX 560		114688 MB/sec
GeForce 820M		16000 MB/sec
	Difference: 98688 (617%)

Texel Rate

The Radeon RX 560 will be a lot (about 554%) faster with regards to anisotropic filtering than the GeForce 820M. (explain)

Radeon RX 560		75200 Mtexels/sec
GeForce 820M		11504 Mtexels/sec
	Difference: 63696 (554%)

Pixel Rate

The Radeon RX 560 is much (more or less 554%) better at FSAA than the GeForce 820M, and should be able to handle higher resolutions without slowing down too much. (explain)

Radeon RX 560		18800 Mpixels/sec
GeForce 820M		2876 Mpixels/sec
	Difference: 15924 (554%)

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 max amount of data (counted in MB per second) that can be transferred across the external memory interface in one second. It's worked out by multiplying the card's bus width by its memory speed. If it uses DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed 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 graphics card will be at handling 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 graphics card can possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.