GeForce 930M vs Radeon HD 6950 2GB

Intro

Compare that to the Radeon HD 6950 2GB, which features clock speeds of 800 MHz on the GPU, and 1250 MHz on the 2048 MB of GDDR5 RAM. It features 1408 SPUs as well as 88 Texture Address Units and 32 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon HD 6950 2GB should perform much faster than the GeForce 930M in general. (explain)

Radeon HD 6950 2GB		160000 MB/sec
GeForce 930M		14400 MB/sec
	Difference: 145600 (1011%)

Texel Rate

The Radeon HD 6950 2GB will be quite a bit (approximately 216%) better at AF than the GeForce 930M. (explain)

Radeon HD 6950 2GB		70400 Mtexels/sec
GeForce 930M		22272 Mtexels/sec
	Difference: 48128 (216%)

Pixel Rate

The Radeon HD 6950 2GB is quite a bit (approximately 245%) more effective at full screen anti-aliasing than the GeForce 930M, and capable of handling higher resolutions without slowing down too much. (explain)

Radeon HD 6950 2GB		25600 Mpixels/sec
GeForce 930M		7424 Mpixels/sec
	Difference: 18176 (245%)

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 (measured in megabytes per second) that can be transferred past the external memory interface within a second. The number is worked out by multiplying the card's bus width by its memory speed. If it uses DDR RAM, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.