GeForce 930M vs Radeon HD 5850

Intro

Compare those specs to the Radeon HD 5850, which comes with a clock frequency of 725 MHz and a GDDR5 memory frequency of 1000 MHz. It also uses a 256-bit bus, and uses a 40 nm design. It is made up of 1440(288x5) SPUs, 72 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

As far as performance goes, the Radeon HD 5850 should theoretically be much better than the GeForce 930M in general. (explain)

Radeon HD 5850		128000 MB/sec
GeForce 930M		14400 MB/sec
	Difference: 113600 (789%)

Texel Rate

The Radeon HD 5850 should be quite a bit (approximately 134%) faster with regards to AF than the GeForce 930M. (explain)

Radeon HD 5850		52200 Mtexels/sec
GeForce 930M		22272 Mtexels/sec
	Difference: 29928 (134%)

Pixel Rate

The Radeon HD 5850 will be a lot (about 213%) faster with regards to FSAA than the GeForce 930M, and also should be capable of handling higher screen resolutions without slowing down too much. (explain)

Radeon HD 5850		23200 Mpixels/sec
GeForce 930M		7424 Mpixels/sec
	Difference: 15776 (213%)

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 maximum amount of information (in units of MB per second) that can be transported over the external memory interface within a second. The number is calculated by multiplying the card's bus width by its memory clock speed. If it uses DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher 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 number of texture map elements (texels) that are applied in one second. This figure is calculated by multiplying the total number of texture units by the core clock speed of the chip. The better the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.