GeForce GT 440 3GB vs GeForce GTX 880M

Intro

Compare all that to the GeForce GTX 880M, which features a GPU core clock speed of 954 MHz, and 4096 MB of GDDR5 RAM set to run at 1000 MHz through a 256-bit bus. It also is comprised of 1536 SPUs, 128 TAUs, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 440 3GB		56 Watts
GeForce GTX 880M		130 Watts
	Difference: 74 Watts (132%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 880M should theoretically be quite a bit better than the GeForce GT 440 3GB overall. (explain)

GeForce GTX 880M		128000 MB/sec
GeForce GT 440 3GB		43200 MB/sec
	Difference: 84800 (196%)

Texel Rate

The GeForce GTX 880M will be much (more or less 757%) better at AF than the GeForce GT 440 3GB. (explain)

GeForce GTX 880M		122112 Mtexels/sec
GeForce GT 440 3GB		14256 Mtexels/sec
	Difference: 107856 (757%)

Pixel Rate

The GeForce GTX 880M will be quite a bit (more or less 114%) more effective at AA than the GeForce GT 440 3GB, and should be capable of handling higher resolutions without losing too much performance. (explain)

GeForce GTX 880M		30528 Mpixels/sec
GeForce GT 440 3GB		14256 Mpixels/sec
	Difference: 16272 (114%)

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 max amount of data (counted in megabytes per second) that can be moved over the external memory interface within a second. The number is worked out by multiplying the interface width by the speed of its memory. If the card has DDR type memory, the result should be multiplied by 2 once 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, High Dynamic Range and higher screen 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 of the card by the core 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 processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.