GeForce 840M vs GeForce GTX 1050 3GB

Intro

Compare all of that to the GeForce GTX 1050 3GB, which has GPU core speed of 1392 MHz, and 3072 MB of GDDR5 RAM set to run at 1750 MHz through a 96-bit bus. It also is made up of 768 SPUs, 48 Texture Address Units, and 24 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 840M		30 Watts
GeForce GTX 1050 3GB		75 Watts
	Difference: 45 Watts (150%)

Memory Bandwidth

In theory, the GeForce GTX 1050 3GB will be 438% quicker than the GeForce 840M in general, because of its greater data rate. (explain)

GeForce GTX 1050 3GB		86016 MB/sec
GeForce 840M		16000 MB/sec
	Difference: 70016 (438%)

Texel Rate

The GeForce GTX 1050 3GB will be quite a bit (more or less 171%) more effective at anisotropic filtering than the GeForce 840M. (explain)

GeForce GTX 1050 3GB		66816 Mtexels/sec
GeForce 840M		24696 Mtexels/sec
	Difference: 42120 (171%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce GTX 1050 3GB is the winner, and very much so. (explain)

GeForce GTX 1050 3GB		33408 Mpixels/sec
GeForce 840M		8232 Mpixels/sec
	Difference: 25176 (306%)

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 (in units of megabytes per second) that can be transferred over the external memory interface within a second. It is worked out by multiplying the interface width by its memory clock speed. If it uses DDR type RAM, the result 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, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This figure is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The better the texel rate, the better the 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 that 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 Render Output Units by the the core 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 fill rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.