GeForce 940M vs GeForce GTX 570

Intro

Compare those specs to the GeForce GTX 570, which features a core clock speed of 732 MHz and a GDDR5 memory speed of 950 MHz. It also features a 320-bit memory bus, and makes use of a 40 nm design. It is comprised of 480 SPUs, 60 Texture Address Units, and 40 Raster Operation Units.

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 570		4387 points
GeForce 940M		1740 points
	Difference: 2647 (152%)

Power Usage and Theoretical Benchmarks

Memory Bandwidth

The GeForce GTX 570 should in theory perform much faster than the GeForce 940M in general. (explain)

GeForce GTX 570		152000 MB/sec
GeForce 940M		16000 MB/sec
	Difference: 136000 (850%)

Texel Rate

The GeForce GTX 570 is quite a bit (approximately 71%) more effective at texture filtering than the GeForce 940M. (explain)

GeForce GTX 570		43920 Mtexels/sec
GeForce 940M		25728 Mtexels/sec
	Difference: 18192 (71%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GTX 570 is a better choice, by far. (explain)

GeForce GTX 570		29280 Mpixels/sec
GeForce 940M		8576 Mpixels/sec
	Difference: 20704 (241%)

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 maximum amount of data (counted in megabytes per second) that can be transported across the external memory interface in one second. It is worked out by multiplying the bus width by its memory clock speed. In the case of DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Raster Operations Pipelines 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 many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.