GeForce GTX 850M vs GeForce RTX 3080 12 GB

Intro

Compare those specifications to the GeForce RTX 3080 12 GB, which uses a 8 nm design. nVidia has clocked the core frequency at 1260 MHz. The GDDR6X RAM runs at a frequency of 1188 MHz on this specific card. It features 8960 SPUs as well as 280 TAUs and 112 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 850M		40 Watts
GeForce RTX 3080 12 GB		350 Watts
	Difference: 310 Watts (775%)

Memory Bandwidth

In theory, the GeForce RTX 3080 12 GB will be 2820% faster than the GeForce GTX 850M in general, because of its greater bandwidth. (explain)

GeForce RTX 3080 12 GB		934298 MB/sec
GeForce GTX 850M		32000 MB/sec
	Difference: 902298 (2820%)

Texel Rate

The GeForce RTX 3080 12 GB is a lot (more or less 907%) better at anisotropic filtering than the GeForce GTX 850M. (explain)

GeForce RTX 3080 12 GB		352800 Mtexels/sec
GeForce GTX 850M		35040 Mtexels/sec
	Difference: 317760 (907%)

Pixel Rate

The GeForce RTX 3080 12 GB will be quite a bit (more or less 907%) better at FSAA than the GeForce GTX 850M, and also able to handle higher screen resolutions more effectively. (explain)

GeForce RTX 3080 12 GB		141120 Mpixels/sec
GeForce GTX 850M		14016 Mpixels/sec
	Difference: 127104 (907%)

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 largest amount of information (measured in MB per second) that can be moved over the external memory interface in a second. The number is calculated by multiplying the interface width by its memory clock speed. If the card has DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, 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 amount of texture map elements (texels) that are processed per second. This is worked out 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 texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.