GeForce 940M vs Radeon HD 5970

Intro

Compare that to the Radeon HD 5970, which features GPU clock speed of 725 MHz, and 1024 MB of GDDR5 RAM running at 1000 MHz through a 256-bit bus. It also is made up of 1600 Stream Processors, 160 TAUs, and 64 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon HD 5970 should perform much faster than the GeForce 940M in general. (explain)

Radeon HD 5970		256000 MB/sec
GeForce 940M		16000 MB/sec
	Difference: 240000 (1500%)

Texel Rate

The Radeon HD 5970 should be much (more or less 802%) better at anisotropic filtering than the GeForce 940M. (explain)

Radeon HD 5970		232000 Mtexels/sec
GeForce 940M		25728 Mtexels/sec
	Difference: 206272 (802%)

Pixel Rate

If using a high resolution is important to you, then the Radeon HD 5970 is superior to the GeForce 940M, by a large margin. (explain)

Radeon HD 5970		92800 Mpixels/sec
GeForce 940M		8576 Mpixels/sec
	Difference: 84224 (982%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the largest amount of information (in units of MB per second) that can be transported past the external memory interface in one second. It is worked out by multiplying the interface width by the speed of its memory. If the card has DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This number is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The higher the texel rate, the better the graphics 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 maximum amount of pixels that the graphics chip can possibly record to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the the core 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 also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.