GeForce 8800 GT 512MB vs GeForce GTX 860M

Intro

Compare those specifications to the GeForce GTX 860M, which makes use of a 28 nm design. nVidia has clocked the core frequency at 797 MHz. The GDDR5 memory runs at a speed of 1000 MHz on this particular model. It features 1152 SPUs along with 96 TAUs and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 860M		45 Watts
GeForce 8800 GT 512MB		105 Watts
	Difference: 60 Watts (133%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 860M should theoretically be just a bit better than the GeForce 8800 GT 512MB in general. (explain)

GeForce GTX 860M		64000 MB/sec
GeForce 8800 GT 512MB		57600 MB/sec
	Difference: 6400 (11%)

Texel Rate

The GeForce GTX 860M will be quite a bit (about 128%) faster with regards to AF than the GeForce 8800 GT 512MB. (explain)

GeForce GTX 860M		76512 Mtexels/sec
GeForce 8800 GT 512MB		33600 Mtexels/sec
	Difference: 42912 (128%)

Pixel Rate

The GeForce GTX 860M is much (approximately 33%) more effective at AA than the GeForce 8800 GT 512MB, and also will be able to handle higher resolutions without slowing down too much. (explain)

GeForce GTX 860M		12752 Mpixels/sec
GeForce 8800 GT 512MB		9600 Mpixels/sec
	Difference: 3152 (33%)

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: Bandwidth is the largest amount of information (in units of megabytes per second) that can be transferred over the external memory interface within a second. It is worked out by multiplying the bus width by its memory clock speed. If the card has DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per 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 the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

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