GeForce 920M vs GeForce GTX 470

Intro

Compare those specs to the GeForce GTX 470, which uses a 40 nm design. nVidia has clocked the core speed at 607 MHz. The GDDR5 memory works at a speed of 837 MHz on this particular model. It features 448 SPUs as well as 56 Texture Address Units and 40 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 GTX 470		2937 points
GeForce 920M		1180 points
	Difference: 1757 (149%)

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the GeForce GTX 470 is 830% faster than the GeForce 920M overall, because of its greater data rate. (explain)

GeForce GTX 470		133920 MB/sec
GeForce 920M		14400 MB/sec
	Difference: 119520 (830%)

Texel Rate

The GeForce GTX 470 is a small bit (approximately 11%) better at texture filtering than the GeForce 920M. (explain)

GeForce GTX 470		33992 Mtexels/sec
GeForce 920M		30528 Mtexels/sec
	Difference: 3464 (11%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce GTX 470 is a better choice, by far. (explain)

GeForce GTX 470		24280 Mpixels/sec
GeForce 920M		7632 Mpixels/sec
	Difference: 16648 (218%)

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 (measured in MB per second) that can be transported past the external memory interface in one second. It is calculated by multiplying the card's bus width by its memory speed. If the card has DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied per second. This is calculated by multiplying the total number of texture units by the core speed of the chip. The better this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

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