GeForce GTX 850M vs Nvidia Titan X

Intro

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

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 850M		40 Watts
Nvidia Titan X		250 Watts
	Difference: 210 Watts (525%)

Memory Bandwidth

As far as performance goes, the Nvidia Titan X should in theory be quite a bit superior to the GeForce GTX 850M overall. (explain)

Nvidia Titan X		491520 MB/sec
GeForce GTX 850M		32000 MB/sec
	Difference: 459520 (1436%)

Texel Rate

The Nvidia Titan X should be quite a bit (more or less 806%) more effective at AF than the GeForce GTX 850M. (explain)

Nvidia Titan X		317408 Mtexels/sec
GeForce GTX 850M		35040 Mtexels/sec
	Difference: 282368 (806%)

Pixel Rate

The Nvidia Titan X is quite a bit (more or less 871%) faster with regards to anti-aliasing than the GeForce GTX 850M, and also capable of handling higher screen resolutions more effectively. (explain)

Nvidia Titan X		136032 Mpixels/sec
GeForce GTX 850M		14016 Mpixels/sec
	Difference: 122016 (871%)

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 data (counted in MB per second) that can be moved past the external memory interface in one second. It's worked out by multiplying the card's bus width by its memory clock speed. If the card has DDR type RAM, the result 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, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This is calculated by multiplying the total amount of texture units by the core speed of the chip. The better this number, the better the graphics 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 maximum number of pixels the video card could possibly write to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.