GeForce GTX 870M vs Radeon R7 370 4G

Intro

Compare those specifications to the Radeon R7 370 4G, which comes with a GPU core clock speed of 975 MHz, and 4096 MB of GDDR5 memory running at 1400 MHz through a 256-bit bus. It also is made up of 1024 SPUs, 64 Texture Address Units, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Both cards have the same power consumption.

Memory Bandwidth

In theory, the Radeon R7 370 4G should perform a lot faster than the GeForce GTX 870M overall. (explain)

Radeon R7 370 4G		179200 MB/sec
GeForce GTX 870M		96000 MB/sec
	Difference: 83200 (87%)

Texel Rate

The GeForce GTX 870M will be much (about 69%) better at texture filtering than the Radeon R7 370 4G. (explain)

GeForce GTX 870M		105392 Mtexels/sec
Radeon R7 370 4G		62400 Mtexels/sec
	Difference: 42992 (69%)

Pixel Rate

The Radeon R7 370 4G is much (approximately 38%) faster with regards to FSAA than the GeForce GTX 870M, and able to handle higher resolutions more effectively. (explain)

Radeon R7 370 4G		31200 Mpixels/sec
GeForce GTX 870M		22584 Mpixels/sec
	Difference: 8616 (38%)

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 data (measured in megabytes per second) that can be moved over the external memory interface within a second. It is worked out by multiplying the card's interface width by its memory speed. If the card has DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better 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 calculated by multiplying the total amount of texture units by the core clock speed of the chip. The higher this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

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