GeForce 830M vs GeForce GTX 480

Intro

Compare all that to the GeForce GTX 480, which makes use of a 40 nm design. nVidia has clocked the core frequency at 700 MHz. The GDDR5 RAM works at a frequency of 924 MHz on this particular model. It features 480 SPUs as well as 60 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 480		250 Watts
	Difference: 225 Watts (900%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 480 should be quite a bit faster than the GeForce 830M overall. (explain)

GeForce GTX 480		177408 MB/sec
GeForce 830M		14400 MB/sec
	Difference: 163008 (1132%)

Texel Rate

The GeForce GTX 480 will be much (approximately 155%) better at AF than the GeForce 830M. (explain)

GeForce GTX 480		42000 Mtexels/sec
GeForce 830M		16464 Mtexels/sec
	Difference: 25536 (155%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GTX 480 is the winner, by a large margin. (explain)

GeForce GTX 480		33600 Mpixels/sec
GeForce 830M		8232 Mpixels/sec
	Difference: 25368 (308%)

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 over the external memory interface in a second. It's calculated by multiplying the bus width by the speed of its memory. In the case of DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the better 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 texture map elements (texels) that are processed in one second. This figure is calculated by multiplying the total texture units by the core speed of the chip. The better the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. 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 lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.