GeForce GTX 870M vs Radeon RX 460 2GB

Intro

Compare that to the Radeon RX 460 2GB, which features GPU clock speed of 1090 MHz, and 2048 MB of GDDR5 memory set to run at 1750 MHz through a 128-bit bus. It also features 896 Stream Processors, 56 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 460 2GB		75 Watts
GeForce GTX 870M		110 Watts
	Difference: 35 Watts (47%)

Memory Bandwidth

Theoretically speaking, the Radeon RX 460 2GB should perform a little bit faster than the GeForce GTX 870M in general. (explain)

Radeon RX 460 2GB		112000 MB/sec
GeForce GTX 870M		96000 MB/sec
	Difference: 16000 (17%)

Texel Rate

The GeForce GTX 870M will be much (about 73%) faster with regards to anisotropic filtering than the Radeon RX 460 2GB. (explain)

GeForce GTX 870M		105392 Mtexels/sec
Radeon RX 460 2GB		61040 Mtexels/sec
	Difference: 44352 (73%)

Pixel Rate

The GeForce GTX 870M should be much (approximately 29%) better at full screen anti-aliasing than the Radeon RX 460 2GB, and also will be able to handle higher screen resolutions while still performing well. (explain)

GeForce GTX 870M		22584 Mpixels/sec
Radeon RX 460 2GB		17440 Mpixels/sec
	Difference: 5144 (29%)

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 data (measured in MB per second) that can be moved across the external memory interface in one second. It is calculated by multiplying the interface width by its memory speed. In the case of DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.