GeForce 940M vs Radeon HD 6750

Intro

Compare those specs to the Radeon HD 6750, which comes with GPU core speed of 725 MHz, and 512 MB of GDDR5 memory running at 1000 MHz through a 128-bit bus. It also is comprised of 720 SPUs, 36 TAUs, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the Radeon HD 6750 will be 300% faster than the GeForce 940M overall, because of its higher bandwidth. (explain)

Radeon HD 6750		64000 MB/sec
GeForce 940M		16000 MB/sec
	Difference: 48000 (300%)

Texel Rate

The Radeon HD 6750 will be just a bit (more or less 1%) more effective at AF than the GeForce 940M. (explain)

Radeon HD 6750		26100 Mtexels/sec
GeForce 940M		25728 Mtexels/sec
	Difference: 372 (1%)

Pixel Rate

The Radeon HD 6750 should be a lot (more or less 35%) more effective at FSAA than the GeForce 940M, and should be capable of handling higher screen resolutions without slowing down too much. (explain)

Radeon HD 6750		11600 Mpixels/sec
GeForce 940M		8576 Mpixels/sec
	Difference: 3024 (35%)

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 largest amount of information (counted in megabytes per second) that can be moved over the external memory interface within a second. It's calculated by multiplying the card's interface width by its memory speed. If the card has DDR type RAM, 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 anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This is calculated by multiplying the total amount 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 per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly write to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends 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.