GeForce 830M vs GeForce 8800 GTX

Intro

Compare those specs to the GeForce 8800 GTX, which uses a 90 nm design. nVidia has clocked the core frequency at 575 MHz. The GDDR3 memory runs at a speed of 900 MHz on this card. It features 128 SPUs along with 64 TAUs and 24 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 830M		25 Watts
GeForce 8800 GTX		155 Watts
	Difference: 130 Watts (520%)

Memory Bandwidth

In theory, the GeForce 8800 GTX should perform quite a bit faster than the GeForce 830M in general. (explain)

GeForce 8800 GTX		86400 MB/sec
GeForce 830M		14400 MB/sec
	Difference: 72000 (500%)

Texel Rate

The GeForce 8800 GTX should be much (approximately 124%) better at texture filtering than the GeForce 830M. (explain)

GeForce 8800 GTX		36800 Mtexels/sec
GeForce 830M		16464 Mtexels/sec
	Difference: 20336 (124%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce 8800 GTX is the winner, by a large margin. (explain)

GeForce 8800 GTX		13800 Mpixels/sec
GeForce 830M		8232 Mpixels/sec
	Difference: 5568 (68%)

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: Memory bandwidth is the max amount of data (measured in megabytes per second) that can be transported past the external memory interface in one second. It is calculated by multiplying the card's bus width by its memory clock speed. If the card has DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, 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 texture map elements (texels) that are applied per second. This number is worked out by multiplying the total number of 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 in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Render Output Units by the the core 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 rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.