GeForce 830M vs GeForce 8800 GT 256MB

Intro

Compare all of that to the GeForce 8800 GT 256MB, which has a GPU core clock speed of 600 MHz, and 256 MB of GDDR3 RAM running at 700 MHz through a 256-bit bus. It also is made up of 112 Stream Processors, 56 Texture Address Units, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 830M		25 Watts
GeForce 8800 GT 256MB		105 Watts
	Difference: 80 Watts (320%)

Memory Bandwidth

Theoretically speaking, the GeForce 8800 GT 256MB should be quite a bit faster than the GeForce 830M in general. (explain)

GeForce 8800 GT 256MB		44800 MB/sec
GeForce 830M		14400 MB/sec
	Difference: 30400 (211%)

Texel Rate

The GeForce 8800 GT 256MB should be much (approximately 104%) faster with regards to texture filtering than the GeForce 830M. (explain)

GeForce 8800 GT 256MB		33600 Mtexels/sec
GeForce 830M		16464 Mtexels/sec
	Difference: 17136 (104%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce 8800 GT 256MB is the winner, though only just barely. (explain)

GeForce 8800 GT 256MB		9600 Mpixels/sec
GeForce 830M		8232 Mpixels/sec
	Difference: 1368 (17%)

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 (in units of MB per second) that can be transferred over the external memory interface in one second. It's calculated by multiplying the card's interface width by its memory speed. If it uses DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This number is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The better this number, the better the graphics card will be at handling 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 video card could possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines by the the core speed of the card. 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 is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.