GeForce GTX 460 (OEM) vs GeForce GTX 880M

Intro

Compare those specifications to the GeForce GTX 880M, which has clock speeds of 954 MHz on the GPU, and 1000 MHz on the 4096 MB of GDDR5 RAM. It features 1536 SPUs as well as 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 (OEM)		150 Watts
	Difference: 20 Watts (15%)

Memory Bandwidth

In theory, the GeForce GTX 880M is 18% faster than the GeForce GTX 460 (OEM) overall, due to its greater bandwidth. (explain)

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

Texel Rate

The GeForce GTX 880M will be much (more or less 235%) better at anisotropic filtering than the GeForce GTX 460 (OEM). (explain)

GeForce GTX 880M		122112 Mtexels/sec
GeForce GTX 460 (OEM)		36400 Mtexels/sec
	Difference: 85712 (235%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GTX 880M is the winner, by far. (explain)

GeForce GTX 880M		30528 Mpixels/sec
GeForce GTX 460 (OEM)		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 max amount of data (counted in MB per second) that can be moved past the external memory interface within a second. It's calculated by multiplying the bus width by its memory clock speed. If it uses DDR RAM, it 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 AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied in one second. This is calculated by multiplying the total number of texture units by the core speed of the chip. The higher the texel rate, the better the card will be at handling 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 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 number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.