GeForce 830M vs GeForce GTX 780 Ti

Intro

Compare those specifications to the GeForce GTX 780 Ti, which makes use of a 28 nm design. nVidia has set the core speed at 875 MHz. The GDDR5 RAM is set to run at a speed of 1750 MHz on this model. It features 2880 SPUs as well as 240 Texture Address Units and 48 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 830M		25 Watts
GeForce GTX 780 Ti		250 Watts
	Difference: 225 Watts (900%)

Memory Bandwidth

The GeForce GTX 780 Ti, in theory, should perform quite a bit faster than the GeForce 830M in general. (explain)

GeForce GTX 780 Ti		336000 MB/sec
GeForce 830M		14400 MB/sec
	Difference: 321600 (2233%)

Texel Rate

The GeForce GTX 780 Ti will be much (approximately 1176%) faster with regards to AF than the GeForce 830M. (explain)

GeForce GTX 780 Ti		210000 Mtexels/sec
GeForce 830M		16464 Mtexels/sec
	Difference: 193536 (1176%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce GTX 780 Ti is superior to the GeForce 830M, by a large margin. (explain)

GeForce GTX 780 Ti		42000 Mpixels/sec
GeForce 830M		8232 Mpixels/sec
	Difference: 33768 (410%)

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 max amount of data (counted in megabytes per second) that can be moved across the external memory interface within a second. It's calculated by multiplying the interface width by its memory clock speed. In the case of DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the better 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 number of texture map elements (texels) that can be processed per second. This number is calculated by multiplying the total texture units by the core clock speed of the chip. The better this number, the better the card will be at handling 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 record to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.