GeForce 920M vs GeForce 940M

Intro

Compare those specs to the GeForce 940M, which has a GPU core clock speed of 1072 MHz, and 2048 MB of DDR3 memory running at 1000 MHz through a 64-bit bus. It also is comprised of 384 Stream Processors, 24 Texture Address Units, and 8 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 920M		1180 points
	Difference: 560 (47%)

Power Usage and Theoretical Benchmarks

Memory Bandwidth

As far as performance goes, the GeForce 940M should theoretically be a small bit superior to the GeForce 920M overall. (explain)

GeForce 940M		16000 MB/sec
GeForce 920M		14400 MB/sec
	Difference: 1600 (11%)

Texel Rate

The GeForce 920M is a little bit (approximately 19%) better at texture filtering than the GeForce 940M. (explain)

GeForce 920M		30528 Mtexels/sec
GeForce 940M		25728 Mtexels/sec
	Difference: 4800 (19%)

Pixel Rate

The GeForce 940M will be just a bit (about 12%) more effective at AA than the GeForce 920M, and will be able to handle higher resolutions better. (explain)

GeForce 940M		8576 Mpixels/sec
GeForce 920M		7632 Mpixels/sec
	Difference: 944 (12%)

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 data (counted in megabytes per second) that can be transferred across the external memory interface in one second. It is worked out by multiplying the interface width by its memory clock speed. In the case of DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better 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 number of texture map elements (texels) that can be applied in one second. This figure is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The higher this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

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