GeForce 8800 GS vs GeForce GTX 870M

Intro

Compare those specs to the GeForce GTX 870M, which comes with a clock speed of 941 MHz and a GDDR5 memory frequency of 1000 MHz. It also features a 192-bit memory bus, and uses a 28 nm design. It is comprised of 1344 SPUs, 112 Texture Address Units, and 24 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8800 GS		105 Watts
GeForce GTX 870M		110 Watts
	Difference: 5 Watts (5%)

Memory Bandwidth

The GeForce GTX 870M should in theory be quite a bit faster than the GeForce 8800 GS overall. (explain)

GeForce GTX 870M		96000 MB/sec
GeForce 8800 GS		38400 MB/sec
	Difference: 57600 (150%)

Texel Rate

The GeForce GTX 870M is much (more or less 299%) faster with regards to anisotropic filtering than the GeForce 8800 GS. (explain)

GeForce GTX 870M		105392 Mtexels/sec
GeForce 8800 GS		26400 Mtexels/sec
	Difference: 78992 (299%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce GTX 870M is superior to the GeForce 8800 GS, by a large margin. (explain)

GeForce GTX 870M		22584 Mpixels/sec
GeForce 8800 GS		6600 Mpixels/sec
	Difference: 15984 (242%)

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 maximum amount of information (counted in megabytes per second) that can be moved over the external memory interface in one second. It is calculated by multiplying the interface width by its memory speed. In the case of DDR type memory, it should be multiplied by 2 once 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 high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly write to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.