GeForce GTX 560 vs GeForce GTX 870M

Intro

Compare that to the GeForce GTX 870M, which comes with a GPU core clock 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 SPUs, 112 TAUs, and 24 Raster Operation Units.

Display Graphs

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

GeForce GTX 870M		4770 points
GeForce GTX 560		3030 points
	Difference: 1740 (57%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 870M		110 Watts
GeForce GTX 560		150 Watts
	Difference: 40 Watts (36%)

Memory Bandwidth

The GeForce GTX 560, in theory, should be much faster than the GeForce GTX 870M in general. (explain)

GeForce GTX 560		128128 MB/sec
GeForce GTX 870M		96000 MB/sec
	Difference: 32128 (33%)

Texel Rate

The GeForce GTX 870M is quite a bit (about 132%) better at anisotropic filtering than the GeForce GTX 560. (explain)

GeForce GTX 870M		105392 Mtexels/sec
GeForce GTX 560		45360 Mtexels/sec
	Difference: 60032 (132%)

Pixel Rate

The GeForce GTX 560 will be a bit (about 15%) better at FSAA than the GeForce GTX 870M, and also will be capable of handling higher resolutions more effectively. (explain)

GeForce GTX 560		25920 Mpixels/sec
GeForce GTX 870M		22584 Mpixels/sec
	Difference: 3336 (15%)

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 max amount of data (in units of megabytes per second) that can be transported past the external memory interface in a second. It's calculated by multiplying the card's interface width by its memory speed. If it uses DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed in one second. This number is worked out by multiplying the total number of texture units by the core clock speed of the chip. The higher this number, the better the 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 most pixels that the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of ROPs by the the core 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 output rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.