GeForce 825M vs Nvidia Titan X

Intro

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

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 825M		33 Watts
Nvidia Titan X		250 Watts
	Difference: 217 Watts (658%)

Memory Bandwidth

As far as performance goes, the Nvidia Titan X should theoretically be a lot superior to the GeForce 825M overall. (explain)

Nvidia Titan X		491520 MB/sec
GeForce 825M		14400 MB/sec
	Difference: 477120 (3313%)

Texel Rate

The Nvidia Titan X is much (approximately 2234%) better at texture filtering than the GeForce 825M. (explain)

Nvidia Titan X		317408 Mtexels/sec
GeForce 825M		13600 Mtexels/sec
	Difference: 303808 (2234%)

Pixel Rate

If using a high screen resolution is important to you, then the Nvidia Titan X is the winner, by far. (explain)

Nvidia Titan X		136032 Mpixels/sec
GeForce 825M		6800 Mpixels/sec
	Difference: 129232 (1900%)

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 moved past the external memory interface in a second. It's calculated by multiplying the interface width by the speed of its memory. If the card has DDR type RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the memory bandwidth, 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 amount of texture map elements (texels) that are applied per second. This is calculated by multiplying the total amount 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 processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly write to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.