GeForce 8800 GT 1GB vs GeForce GTX 860M

Intro

Compare all that to the GeForce GTX 860M, which features a core clock speed of 797 MHz and a GDDR5 memory speed of 1000 MHz. It also features 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

In theory, the GeForce GTX 860M should be 11% quicker than the GeForce 8800 GT 1GB overall, because of its higher data rate. (explain)

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

Texel Rate

The GeForce GTX 860M is a lot (about 128%) more effective at texture filtering 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 should be a lot (about 33%) faster with regards to anti-aliasing than the GeForce 8800 GT 1GB, and also should be able to handle higher screen resolutions while still performing well. (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 moved past the external memory interface within a second. The number is calculated by multiplying the card's interface width by the speed of its memory. If it uses DDR type RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. 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 fill rate also depends on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.