GeForce 830M vs GeForce 8800 GTS (G80) 320MB

Intro

Compare those specifications to the GeForce 8800 GTS (G80) 320MB, which comes with core speeds of 513 MHz on the GPU, and 792 MHz on the 320 MB of GDDR3 memory. It features 96 SPUs along with 48 TAUs and 20 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 830M		25 Watts
GeForce 8800 GTS (G80) 320MB		143 Watts
	Difference: 118 Watts (472%)

Memory Bandwidth

In theory, the GeForce 8800 GTS (G80) 320MB should be much faster than the GeForce 830M in general. (explain)

GeForce 8800 GTS (G80) 320MB		63360 MB/sec
GeForce 830M		14400 MB/sec
	Difference: 48960 (340%)

Texel Rate

The GeForce 8800 GTS (G80) 320MB is quite a bit (approximately 50%) more effective at anisotropic filtering than the GeForce 830M. (explain)

GeForce 8800 GTS (G80) 320MB		24624 Mtexels/sec
GeForce 830M		16464 Mtexels/sec
	Difference: 8160 (50%)

Pixel Rate

The GeForce 8800 GTS (G80) 320MB will be quite a bit (approximately 25%) better at full screen anti-aliasing than the GeForce 830M, and should be capable of handling higher screen resolutions without losing too much performance. (explain)

GeForce 8800 GTS (G80) 320MB		10260 Mpixels/sec
GeForce 830M		8232 Mpixels/sec
	Difference: 2028 (25%)

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 MB per second) that can be transported past the external memory interface in one second. It is calculated by multiplying the bus width by the speed of its memory. If it uses DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, 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 number of texture map elements (texels) that can be processed in one second. This number is worked out by multiplying the total number of texture units by the core clock speed of the chip. The higher this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the most pixels the video card can possibly record to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.