GeForce GTX 460 SE vs GeForce GTX 880M

Intro

Compare that to the GeForce GTX 880M, which comes with GPU core speed of 954 MHz, and 4096 MB of GDDR5 memory running at 1000 MHz through a 256-bit bus. It also is comprised of 1536 SPUs, 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 460 SE		150 Watts
	Difference: 20 Watts (15%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 880M should in theory be a little bit superior to the GeForce GTX 460 SE overall. (explain)

GeForce GTX 880M		128000 MB/sec
GeForce GTX 460 SE		108800 MB/sec
	Difference: 19200 (18%)

Texel Rate

The GeForce GTX 880M will be much (about 291%) more effective at anisotropic filtering than the GeForce GTX 460 SE. (explain)

GeForce GTX 880M		122112 Mtexels/sec
GeForce GTX 460 SE		31200 Mtexels/sec
	Difference: 90912 (291%)

Pixel Rate

The GeForce GTX 880M will be much (more or less 47%) faster with regards to full screen anti-aliasing than the GeForce GTX 460 SE, and will be capable of handling higher resolutions more effectively. (explain)

GeForce GTX 880M		30528 Mpixels/sec
GeForce GTX 460 SE		20800 Mpixels/sec
	Difference: 9728 (47%)

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 (measured in megabytes per second) that can be moved across the external memory interface within a second. It is worked out by multiplying the card's interface width by its memory speed. If the card has DDR type memory, 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 are processed per second. This is worked out 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 handling 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 the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. The number is calculated 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 filling the screen with pixels (the image). The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.