GeForce 8800 GTX vs GeForce GTX 870M

Intro

Compare those specifications to the GeForce GTX 870M, which makes use of a 28 nm design. nVidia has set the core speed at 941 MHz. The GDDR5 memory runs at a speed of 1000 MHz on this specific card. It features 1344 SPUs along with 112 TAUs and 24 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 870M		110 Watts
GeForce 8800 GTX		155 Watts
	Difference: 45 Watts (41%)

Memory Bandwidth

The GeForce GTX 870M should theoretically be just a bit faster than the GeForce 8800 GTX overall. (explain)

GeForce GTX 870M		96000 MB/sec
GeForce 8800 GTX		86400 MB/sec
	Difference: 9600 (11%)

Texel Rate

The GeForce GTX 870M will be a lot (more or less 186%) more effective at anisotropic filtering than the GeForce 8800 GTX. (explain)

GeForce GTX 870M		105392 Mtexels/sec
GeForce 8800 GTX		36800 Mtexels/sec
	Difference: 68592 (186%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GTX 870M is the winner, by a large margin. (explain)

GeForce GTX 870M		22584 Mpixels/sec
GeForce 8800 GTX		13800 Mpixels/sec
	Difference: 8784 (64%)

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 megabytes per second) that can be transported across the external memory interface within a second. The number is calculated by multiplying the card's interface width by its memory speed. If it uses DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied in one second. This figure is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The higher this number, 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 most pixels the video card could possibly write to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.