GeForce 830M vs GeForce GTX 780 Ti

Intro

Compare all that to the GeForce GTX 780 Ti, which uses a 28 nm design. nVidia has set the core speed at 875 MHz. The GDDR5 memory is set to run at a speed of 1750 MHz on this specific model. It features 2880 SPUs along with 240 Texture Address Units and 48 Rasterization Operator Units.

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

In theory, the GeForce GTX 780 Ti should be much faster than the GeForce 830M overall. (explain)

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

Texel Rate

The GeForce GTX 780 Ti is much (about 1176%) better at AF than the GeForce 830M. (explain)

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

Pixel Rate

The GeForce GTX 780 Ti will be a lot (approximately 410%) better at anti-aliasing than the GeForce 830M, and should be capable of handling higher screen resolutions without losing too much performance. (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 maximum amount of information (counted in MB per second) that can be moved over the external memory interface in one second. It is calculated by multiplying the card's interface width by the speed of its memory. If the card has DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This is calculated by multiplying the total texture units by the core speed of the chip. The better the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can 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 - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.