GeForce 825M vs GeForce 9600 GSO 768MB

Intro

Compare those specs to the GeForce 9600 GSO 768MB, which comes with core clock speeds of 550 MHz on the GPU, and 800 MHz on the 768 MB of GDDR3 RAM. It features 96 SPUs as well as 48 Texture Address Units and 12 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 825M		33 Watts
GeForce 9600 GSO 768MB		84 Watts
	Difference: 51 Watts (155%)

Memory Bandwidth

Theoretically speaking, the GeForce 9600 GSO 768MB should be 167% quicker than the GeForce 825M overall, because of its higher bandwidth. (explain)

GeForce 9600 GSO 768MB		38400 MB/sec
GeForce 825M		14400 MB/sec
	Difference: 24000 (167%)

Texel Rate

The GeForce 9600 GSO 768MB should be quite a bit (about 94%) more effective at AF than the GeForce 825M. (explain)

GeForce 9600 GSO 768MB		26400 Mtexels/sec
GeForce 825M		13600 Mtexels/sec
	Difference: 12800 (94%)

Pixel Rate

The GeForce 825M is a little bit (approximately 3%) better at full screen anti-aliasing than the GeForce 9600 GSO 768MB, and able to handle higher resolutions while still performing well. (explain)

GeForce 825M		6800 Mpixels/sec
GeForce 9600 GSO 768MB		6600 Mpixels/sec
	Difference: 200 (3%)

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 megabytes per second) that can be transported over the external memory interface in a second. It's worked out by multiplying the card's bus width by its memory clock speed. If the card has DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the faster 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 amount of texture map elements (texels) that are applied per second. This figure is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The higher the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.