GeForce GTX 850M vs Nvidia Titan X

Intro

Compare that to the Nvidia Titan X, which features a core clock speed of 1417 MHz and a GDDR5X memory speed of 1251 MHz. It also uses a 384-bit bus, and uses a 16 nm design. It is comprised 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 850M		40 Watts
Nvidia Titan X		250 Watts
	Difference: 210 Watts (525%)

Memory Bandwidth

Theoretically, the Nvidia Titan X should be much faster than 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 is much (approximately 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

If using high levels of AA 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 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: Bandwidth is the maximum amount of data (counted in MB per second) that can be transported across the external memory interface in one second. The number is calculated by multiplying the bus width by its memory speed. If the card has DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This figure is calculated by multiplying the total number of texture units by the core clock speed of the chip. The better the texel rate, 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 maximum number of pixels that the graphics card can possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.