GeForce GT 440 3GB vs GeForce GTX 970M

Intro

Compare those specifications to the GeForce GTX 970M, which features a core clock speed of 924 MHz and a GDDR5 memory speed of 1000 MHz. It also makes use of a 192-bit bus, and uses a 28 nm design. It features 1280 SPUs, 80 TAUs, and 48 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 440 3GB		56 Watts
GeForce GTX 970M		75 Watts
	Difference: 19 Watts (34%)

Memory Bandwidth

In theory, the GeForce GTX 970M should perform much faster than the GeForce GT 440 3GB in general. (explain)

GeForce GTX 970M		96000 MB/sec
GeForce GT 440 3GB		43200 MB/sec
	Difference: 52800 (122%)

Texel Rate

The GeForce GTX 970M will be quite a bit (more or less 419%) better at AF than the GeForce GT 440 3GB. (explain)

GeForce GTX 970M		73920 Mtexels/sec
GeForce GT 440 3GB		14256 Mtexels/sec
	Difference: 59664 (419%)

Pixel Rate

The GeForce GTX 970M should be a lot (more or less 211%) more effective at full screen anti-aliasing than the GeForce GT 440 3GB, and also should be capable of handling higher screen resolutions better. (explain)

GeForce GTX 970M		44352 Mpixels/sec
GeForce GT 440 3GB		14256 Mpixels/sec
	Difference: 30096 (211%)

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 (in units of megabytes per second) that can be moved over the external memory interface in a second. It's 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 again. If DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This number is worked out 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 applied in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card can 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 speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends 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.