GeForce 8800 GT 1GB vs GeForce GTX 870M

Intro

Compare those specifications to the GeForce GTX 870M, which comes with clock speeds of 941 MHz on the GPU, and 1000 MHz on the 3072 MB of GDDR5 memory. It features 1344 SPUs as well as 112 Texture Address Units and 24 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8800 GT 1GB		105 Watts
GeForce GTX 870M		110 Watts
	Difference: 5 Watts (5%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 870M should in theory be a lot better than the GeForce 8800 GT 1GB in general. (explain)

GeForce GTX 870M		96000 MB/sec
GeForce 8800 GT 1GB		57600 MB/sec
	Difference: 38400 (67%)

Texel Rate

The GeForce GTX 870M is much (approximately 214%) faster with regards to texture filtering than the GeForce 8800 GT 1GB. (explain)

GeForce GTX 870M		105392 Mtexels/sec
GeForce 8800 GT 1GB		33600 Mtexels/sec
	Difference: 71792 (214%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce GTX 870M is superior to the GeForce 8800 GT 1GB, by far. (explain)

GeForce GTX 870M		22584 Mpixels/sec
GeForce 8800 GT 1GB		9600 Mpixels/sec
	Difference: 12984 (135%)

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 (counted in MB per second) that can be transferred 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 it uses DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster 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 number of texture map elements (texels) that can be applied per second. This number is calculated by multiplying the total number of texture units of the card by the core 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 one second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly record to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.