GeForce GTX 460 1GB 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 memory is set to run at a speed of 1000 MHz on this particular model. It features 1536 SPUs as well as 128 TAUs and 32 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 880M		130 Watts
GeForce GTX 460 1GB		160 Watts
	Difference: 30 Watts (23%)

Memory Bandwidth

Performance-wise, the GeForce GTX 880M should theoretically be a small bit superior to the GeForce GTX 460 1GB in general. (explain)

GeForce GTX 880M		128000 MB/sec
GeForce GTX 460 1GB		115200 MB/sec
	Difference: 12800 (11%)

Texel Rate

The GeForce GTX 880M is much (approximately 223%) faster with regards to AF than the GeForce GTX 460 1GB. (explain)

GeForce GTX 880M		122112 Mtexels/sec
GeForce GTX 460 1GB		37800 Mtexels/sec
	Difference: 84312 (223%)

Pixel Rate

The GeForce GTX 880M should be a lot (about 41%) more effective at full screen anti-aliasing than the GeForce GTX 460 1GB, and will be able to handle higher resolutions better. (explain)

GeForce GTX 880M		30528 Mpixels/sec
GeForce GTX 460 1GB		21600 Mpixels/sec
	Difference: 8928 (41%)

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: Memory bandwidth is the largest amount of data (counted in MB per second) that can be transferred over the external memory interface within a second. The number is worked out by multiplying the card's bus width by the speed of its memory. If it uses DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This number is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The higher the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.