GeForce 8800 GT 1GB vs GeForce GTX 860M

Intro

Compare that to the GeForce GTX 860M, which has a clock speed of 797 MHz and a GDDR5 memory frequency of 1000 MHz. It also uses a 128-bit memory bus, and makes use of a 28 nm design. It is made up of 1152 SPUs, 96 Texture Address Units, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 860M		45 Watts
GeForce 8800 GT 1GB		105 Watts
	Difference: 60 Watts (133%)

Memory Bandwidth

The GeForce GTX 860M, in theory, should be a bit faster than the GeForce 8800 GT 1GB in general. (explain)

GeForce GTX 860M		64000 MB/sec
GeForce 8800 GT 1GB		57600 MB/sec
	Difference: 6400 (11%)

Texel Rate

The GeForce GTX 860M will be much (about 128%) faster with regards to AF than the GeForce 8800 GT 1GB. (explain)

GeForce GTX 860M		76512 Mtexels/sec
GeForce 8800 GT 1GB		33600 Mtexels/sec
	Difference: 42912 (128%)

Pixel Rate

The GeForce GTX 860M is a lot (about 33%) more effective at FSAA than the GeForce 8800 GT 1GB, and should be capable of handling higher screen resolutions without losing too much performance. (explain)

GeForce GTX 860M		12752 Mpixels/sec
GeForce 8800 GT 1GB		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 max amount of data (measured in MB per second) that can be transferred across the external memory interface within a second. The number is worked out by multiplying the card's interface width by its memory clock speed. If the card has DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better 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 is calculated by multiplying the total texture units by the core clock speed of the chip. The better this number, 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 most pixels that the graphics chip could possibly write to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.