GeForce 920M vs GeForce GTX 470

Intro

Compare those specs to the GeForce GTX 470, which features GPU core speed of 607 MHz, and 1280 MB of GDDR5 memory set to run at 837 MHz through a 320-bit bus. It also features 448 Stream Processors, 56 TAUs, 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

In theory, the GeForce GTX 470 should be much faster than the GeForce 920M in general. (explain)

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

Texel Rate

The GeForce GTX 470 is a bit (more or less 11%) better at AF than the GeForce 920M. (explain)

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

Pixel Rate

The GeForce GTX 470 will be a lot (about 218%) more effective at FSAA than the GeForce 920M, and also will be capable of handling higher screen resolutions without losing too much performance. (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: Memory bandwidth is the maximum amount of data (measured in MB per second) that can be transported across the external memory interface in one second. It is worked out by multiplying the card's interface width by its memory clock speed. In the case of DDR memory, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The better the texel rate, the better the 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 the video card can possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.