GeForce GTX 1050 3GB vs GeForce GTX 870M

Intro

Compare all that to the GeForce GTX 870M, which comes with GPU core speed of 941 MHz, and 3072 MB of GDDR5 RAM running at 1000 MHz through a 192-bit bus. It also is made up of 1344 Stream Processors, 112 TAUs, and 24 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 1050 3GB		75 Watts
GeForce GTX 870M		110 Watts
	Difference: 35 Watts (47%)

Memory Bandwidth

In theory, the GeForce GTX 870M should be a bit faster than the GeForce GTX 1050 3GB overall. (explain)

GeForce GTX 870M		96000 MB/sec
GeForce GTX 1050 3GB		86016 MB/sec
	Difference: 9984 (12%)

Texel Rate

The GeForce GTX 870M should be a lot (more or less 58%) faster with regards to anisotropic filtering than the GeForce GTX 1050 3GB. (explain)

GeForce GTX 870M		105392 Mtexels/sec
GeForce GTX 1050 3GB		66816 Mtexels/sec
	Difference: 38576 (58%)

Pixel Rate

The GeForce GTX 1050 3GB will be much (approximately 48%) faster with regards to full screen anti-aliasing than the GeForce GTX 870M, and also should be able to handle higher screen resolutions without losing too much performance. (explain)

GeForce GTX 1050 3GB		33408 Mpixels/sec
GeForce GTX 870M		22584 Mpixels/sec
	Difference: 10824 (48%)

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: Memory bandwidth is the largest amount of information (counted in megabytes per second) that can be transported across the external memory interface within a second. It is calculated by multiplying the interface width by its memory speed. In the case of DDR RAM, it 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 AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed per second. This figure is worked out by multiplying the total texture units by the core clock 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 in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.