GeForce GTX 260 216SP 55 nm vs GeForce GTX 880M

Intro

Compare those specs to the GeForce GTX 880M, which makes use of a 28 nm design. nVidia has clocked the core frequency at 954 MHz. The GDDR5 RAM is set to run at a speed of 1000 MHz on this particular card. It features 1536 SPUs along with 128 Texture Address Units and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 880M		130 Watts
GeForce GTX 260 216SP 55 nm		171 Watts
	Difference: 41 Watts (32%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 880M should theoretically be a small bit superior to the GeForce GTX 260 216SP 55 nm in general. (explain)

GeForce GTX 880M		128000 MB/sec
GeForce GTX 260 216SP 55 nm		111888 MB/sec
	Difference: 16112 (14%)

Texel Rate

The GeForce GTX 880M should be a lot (approximately 194%) better at AF than the GeForce GTX 260 216SP 55 nm. (explain)

GeForce GTX 880M		122112 Mtexels/sec
GeForce GTX 260 216SP 55 nm		41472 Mtexels/sec
	Difference: 80640 (194%)

Pixel Rate

The GeForce GTX 880M should be a lot (about 89%) more effective at FSAA than the GeForce GTX 260 216SP 55 nm, and capable of handling higher screen resolutions more effectively. (explain)

GeForce GTX 880M		30528 Mpixels/sec
GeForce GTX 260 216SP 55 nm		16128 Mpixels/sec
	Difference: 14400 (89%)

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 maximum amount of data (in units of MB per second) that can be moved across the external memory interface in a second. It is calculated by multiplying the bus width by the speed of its memory. If it uses DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. This figure is calculated by multiplying the total texture units by the core 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 per second.

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