GeForce 8800 GT 512MB vs Radeon Pro Duo

Intro

Compare those specs to the Radeon Pro Duo, which makes use of a 28 nm design. AMD has set the core speed at 1000 MHz. The HBM RAM runs at a speed of 500 MHz on this specific model. It features 4096 SPUs as well as 256 Texture Address Units and 64 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8800 GT 512MB		105 Watts
Radeon Pro Duo		350 Watts
	Difference: 245 Watts (233%)

Memory Bandwidth

The Radeon Pro Duo, in theory, should perform quite a bit faster than the GeForce 8800 GT 512MB in general. (explain)

Radeon Pro Duo		1024000 MB/sec
GeForce 8800 GT 512MB		57600 MB/sec
	Difference: 966400 (1678%)

Texel Rate

The Radeon Pro Duo should be much (approximately 1424%) better at anisotropic filtering than the GeForce 8800 GT 512MB. (explain)

Radeon Pro Duo		512000 Mtexels/sec
GeForce 8800 GT 512MB		33600 Mtexels/sec
	Difference: 478400 (1424%)

Pixel Rate

The Radeon Pro Duo is much (more or less 1233%) faster with regards to full screen anti-aliasing than the GeForce 8800 GT 512MB, and should be able to handle higher resolutions more effectively. (explain)

Radeon Pro Duo		128000 Mpixels/sec
GeForce 8800 GT 512MB		9600 Mpixels/sec
	Difference: 118400 (1233%)

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 max amount of data (counted in megabytes per second) that can be transported past the external memory interface within a second. It is worked out by multiplying the card's bus width by its memory speed. If it uses DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This figure is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The higher the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly write to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.