GeForce GTX 870M vs Nvidia Titan X

Intro

Compare all that to the Nvidia Titan X, which features a clock speed of 1417 MHz and a GDDR5X memory frequency of 1251 MHz. It also makes use of a 384-bit bus, and makes use of a 16 nm design. It is made up of 3584 SPUs, 224 Texture Address Units, and 96 ROPs.

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

As far as performance goes, the Nvidia Titan X should theoretically be quite a bit superior to 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%) more effective 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

The Nvidia Titan X should be a lot (about 502%) more effective at anti-aliasing than the GeForce GTX 870M, and also will be capable of handling higher screen resolutions better. (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: Memory bandwidth is the maximum amount of information (counted in megabytes per second) that can be moved past the external memory interface in a second. It is calculated by multiplying the bus width by the speed of its memory. In the case of DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better 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 amount of texture map elements (texels) that are processed per second. This figure is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per 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. The figure is worked out by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.