GeForce 820M vs GeForce 9600 GSO 768MB

Intro

Compare all of that to the GeForce 9600 GSO 768MB, which has core clock speeds of 550 MHz on the GPU, and 800 MHz on the 768 MB of GDDR3 memory. It features 96 SPUs as well as 48 Texture Address Units and 12 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 820M		15 Watts
GeForce 9600 GSO 768MB		84 Watts
	Difference: 69 Watts (460%)

Memory Bandwidth

As far as performance goes, the GeForce 9600 GSO 768MB should in theory be a lot better than the GeForce 820M in general. (explain)

GeForce 9600 GSO 768MB		38400 MB/sec
GeForce 820M		16000 MB/sec
	Difference: 22400 (140%)

Texel Rate

The GeForce 9600 GSO 768MB will be quite a bit (about 129%) more effective at AF than the GeForce 820M. (explain)

GeForce 9600 GSO 768MB		26400 Mtexels/sec
GeForce 820M		11504 Mtexels/sec
	Difference: 14896 (129%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce 9600 GSO 768MB is a better choice, by far. (explain)

GeForce 9600 GSO 768MB		6600 Mpixels/sec
GeForce 820M		2876 Mpixels/sec
	Difference: 3724 (129%)

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 information (counted in MB per second) that can be moved over the external memory interface in one second. The number is worked out by multiplying the card's interface width by its memory speed. In the case of DDR memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed in one second. This is worked out by multiplying the total texture units by the core clock speed of the chip. The better the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.