GeForce GTX 880M vs Radeon HD 5970

Intro

Compare those specifications to the Radeon HD 5970, which features GPU clock speed of 725 MHz, and 1024 MB of GDDR5 RAM set to run at 1000 MHz through a 256-bit bus. It also features 1600 Stream Processors, 160 Texture Address Units, and 64 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 880M		130 Watts
Radeon HD 5970		294 Watts
	Difference: 164 Watts (126%)

Memory Bandwidth

In theory, the Radeon HD 5970 should be much faster than the GeForce GTX 880M in general. (explain)

Radeon HD 5970		256000 MB/sec
GeForce GTX 880M		128000 MB/sec
	Difference: 128000 (100%)

Texel Rate

The Radeon HD 5970 should be a lot (approximately 90%) faster with regards to texture filtering than the GeForce GTX 880M. (explain)

Radeon HD 5970		232000 Mtexels/sec
GeForce GTX 880M		122112 Mtexels/sec
	Difference: 109888 (90%)

Pixel Rate

The Radeon HD 5970 should be much (about 204%) better at anti-aliasing than the GeForce GTX 880M, and also will be able to handle higher screen resolutions more effectively. (explain)

Radeon HD 5970		92800 Mpixels/sec
GeForce GTX 880M		30528 Mpixels/sec
	Difference: 62272 (204%)

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: Memory bandwidth is the largest amount of data (measured in MB per second) that can be moved over the external memory interface in one second. The number is calculated by multiplying the bus width by its memory clock speed. If the card has 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 anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed per second. This is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The higher this number, the better the card will be at 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 that the graphics chip could possibly record to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs by the clock 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 output rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.