GeForce 930M vs Radeon HD 5970

Intro

Compare all of that to the Radeon HD 5970, which has a clock frequency of 725 MHz and a GDDR5 memory frequency of 1000 MHz. It also makes use of a 256-bit bus, and makes use of a 40 nm design. It is made up of 1600 SPUs, 160 TAUs, and 64 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Performance-wise, the Radeon HD 5970 should in theory be a lot better than the GeForce 930M overall. (explain)

Radeon HD 5970		256000 MB/sec
GeForce 930M		14400 MB/sec
	Difference: 241600 (1678%)

Texel Rate

The Radeon HD 5970 is quite a bit (about 942%) faster with regards to anisotropic filtering than the GeForce 930M. (explain)

Radeon HD 5970		232000 Mtexels/sec
GeForce 930M		22272 Mtexels/sec
	Difference: 209728 (942%)

Pixel Rate

The Radeon HD 5970 will be a lot (about 1150%) better at AA than the GeForce 930M, and will be capable of handling higher resolutions better. (explain)

Radeon HD 5970		92800 Mpixels/sec
GeForce 930M		7424 Mpixels/sec
	Difference: 85376 (1150%)

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 max amount of data (measured in MB per second) that can be moved past the external memory interface in a second. It's worked out by multiplying the bus width by its memory speed. If the card has DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This figure is worked out by multiplying the total amount of texture units of the card by the core 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 applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly record to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.