GeForce GTX 460 1GB vs GeForce GTX 880M

Intro

Compare all that to the GeForce GTX 880M, which comes with a core clock frequency of 954 MHz and a GDDR5 memory speed of 1000 MHz. It also uses a 256-bit bus, and uses a 28 nm design. It features 1536 SPUs, 128 TAUs, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

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

The GeForce GTX 880M should in theory perform a bit faster than 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 should be quite a bit (more or less 223%) better at texture filtering 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 (more or less 41%) better at full screen anti-aliasing than the GeForce GTX 460 1GB, and also should be able to handle higher resolutions more effectively. (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 information (counted in megabytes per second) that can be moved across the external memory interface in one second. The number is calculated by multiplying the card's bus width by its memory speed. In the case of DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed per second. This figure is worked out by multiplying the total texture units of the card 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 in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.