GeForce 940M vs GeForce GT 440 1.5GB

Intro

Compare that to the GeForce GT 440 1.5GB, which makes use of a 40 nm design. nVidia has clocked the core frequency at 594 MHz. The GDDR3 memory runs at a speed of 900 MHz on this particular card. It features 144 SPUs along with 24 TAUs and 24 ROPs.

Display Graphs

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

GeForce 940M		1740 points
GeForce GT 440 1.5GB		840 points
	Difference: 900 (107%)

Power Usage and Theoretical Benchmarks

Memory Bandwidth

As far as performance goes, the GeForce GT 440 1.5GB should theoretically be much superior to the GeForce 940M overall. (explain)

GeForce GT 440 1.5GB		43200 MB/sec
GeForce 940M		16000 MB/sec
	Difference: 27200 (170%)

Texel Rate

The GeForce 940M is quite a bit (about 80%) more effective at texture filtering than the GeForce GT 440 1.5GB. (explain)

GeForce 940M		25728 Mtexels/sec
GeForce GT 440 1.5GB		14256 Mtexels/sec
	Difference: 11472 (80%)

Pixel Rate

The GeForce GT 440 1.5GB will be much (more or less 66%) better at AA than the GeForce 940M, and capable of handling higher screen resolutions more effectively. (explain)

GeForce GT 440 1.5GB		14256 Mpixels/sec
GeForce 940M		8576 Mpixels/sec
	Difference: 5680 (66%)

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 transferred past the external memory interface within a second. The number is worked out by multiplying the bus width by its memory speed. If the card has DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed in one second. This number is calculated by multiplying the total number of texture units by the core clock speed of the chip. The higher this number, the better the video 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 maximum number of pixels the video card could possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.