GeForce 940M vs Radeon HD 3470 256MB

Intro

Compare those specifications to the Radeon HD 3470 256MB, which comes with GPU clock speed of 800 MHz, and 256 MB of DDR2 memory set to run at 950 MHz through a 128-bit bus. It also is comprised of 40(8x5) SPUs, 4 Texture Address Units, and 4 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically, the Radeon HD 3470 256MB should be quite a bit faster than the GeForce 940M in general. (explain)

Radeon HD 3470 256MB		30400 MB/sec
GeForce 940M		16000 MB/sec
	Difference: 14400 (90%)

Texel Rate

The GeForce 940M is much (more or less 704%) better at texture filtering than the Radeon HD 3470 256MB. (explain)

GeForce 940M		25728 Mtexels/sec
Radeon HD 3470 256MB		3200 Mtexels/sec
	Difference: 22528 (704%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce 940M is superior to the Radeon HD 3470 256MB, by a large margin. (explain)

GeForce 940M		8576 Mpixels/sec
Radeon HD 3470 256MB		3200 Mpixels/sec
	Difference: 5376 (168%)

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 information (counted in megabytes per second) that can be moved over the external memory interface in one second. It is calculated by multiplying the bus width by its memory speed. In the case of DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly record to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour ROPs 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 also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.