GeForce GTX 460 (OEM) vs GeForce GTX 880M

Intro

Compare those specifications to the GeForce GTX 880M, which has a core clock speed of 954 MHz and a GDDR5 memory speed of 1000 MHz. It also makes use of a 256-bit memory bus, and makes use of a 28 nm design. It features 1536 SPUs, 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 460 (OEM)		150 Watts
	Difference: 20 Watts (15%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 880M is 18% quicker than the GeForce GTX 460 (OEM) overall, because of its higher data rate. (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 quite a bit (approximately 235%) better at AF 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 screen resolution is important to you, then the GeForce GTX 880M is the winner, and very much so. (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 information (counted in megabytes per second) that can be transported over the external memory interface in a second. It's calculated by multiplying the card's interface width by the speed of its memory. In the case of DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the 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 amount of texture map elements (texels) that are applied in one second. This number is worked out by multiplying the total texture units by the core speed of the chip. The better the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines by the the core 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 many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.