GeForce GTX 260 vs GeForce GTX 880M

Intro

Compare those specs to the GeForce GTX 880M, which uses a 28 nm design. nVidia has set the core speed at 954 MHz. The GDDR5 RAM runs at a frequency of 1000 MHz on this model. It features 1536 SPUs as well as 128 TAUs 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		182 Watts
	Difference: 52 Watts (40%)

Memory Bandwidth

Performance-wise, the GeForce GTX 880M should theoretically be a little bit better than the GeForce GTX 260 in general. (explain)

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

Texel Rate

The GeForce GTX 880M should be much (more or less 231%) faster with regards to anisotropic filtering than the GeForce GTX 260. (explain)

GeForce GTX 880M		122112 Mtexels/sec
GeForce GTX 260		36864 Mtexels/sec
	Difference: 85248 (231%)

Pixel Rate

The GeForce GTX 880M is much (about 89%) faster with regards to FSAA than the GeForce GTX 260, and able to handle higher screen resolutions more effectively. (explain)

GeForce GTX 880M		30528 Mpixels/sec
GeForce GTX 260		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 largest amount of information (in units of megabytes per second) that can be moved past the external memory interface within a second. The number is calculated by multiplying the bus width by its memory clock speed. If it uses DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better 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 texture map elements (texels) that can be processed per second. This number is calculated by multiplying the total number of texture units by the core clock speed of the chip. The better the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.