GeForce GTX 870M vs Nvidia Titan X

Intro

Compare those specs to the Nvidia Titan X, which has core speeds of 1417 MHz on the GPU, and 1251 MHz on the 12288 MB of GDDR5X memory. It features 3584 SPUs as well as 224 Texture Address Units and 96 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 870M		110 Watts
Nvidia Titan X		250 Watts
	Difference: 140 Watts (127%)

Memory Bandwidth

Theoretically, the Nvidia Titan X should be quite a bit faster than the GeForce GTX 870M in general. (explain)

Nvidia Titan X		491520 MB/sec
GeForce GTX 870M		96000 MB/sec
	Difference: 395520 (412%)

Texel Rate

The Nvidia Titan X will be much (about 201%) better at AF than the GeForce GTX 870M. (explain)

Nvidia Titan X		317408 Mtexels/sec
GeForce GTX 870M		105392 Mtexels/sec
	Difference: 212016 (201%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Nvidia Titan X is a better choice, by a large margin. (explain)

Nvidia Titan X		136032 Mpixels/sec
GeForce GTX 870M		22584 Mpixels/sec
	Difference: 113448 (502%)

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 maximum amount of information (counted in megabytes per second) that can be transferred across the external memory interface within a second. The number is calculated by multiplying the bus width by the speed of its memory. If the card has DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed in one second. This is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the 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 amount of pixels the graphics card could possibly record to the local memory per 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 - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.