GeForce GTX 285 1GB vs Radeon HD 6970

Intro

Compare all that to the Radeon HD 6970, which comes with clock speeds of 880 MHz on the GPU, and 1375 MHz on the 2048 MB of GDDR5 memory. It features 1536 SPUs along with 96 Texture Address Units and 32 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 285 1GB		204 Watts
Radeon HD 6970		250 Watts
	Difference: 46 Watts (23%)

Memory Bandwidth

Theoretically, the Radeon HD 6970 should perform a little bit faster than the GeForce GTX 285 1GB in general. (explain)

Radeon HD 6970		176000 MB/sec
GeForce GTX 285 1GB		158976 MB/sec
	Difference: 17024 (11%)

Texel Rate

The Radeon HD 6970 will be quite a bit (more or less 63%) more effective at AF than the GeForce GTX 285 1GB. (explain)

Radeon HD 6970		84480 Mtexels/sec
GeForce GTX 285 1GB		51840 Mtexels/sec
	Difference: 32640 (63%)

Pixel Rate

If using a high resolution is important to you, then the Radeon HD 6970 is superior to the GeForce GTX 285 1GB, by a large margin. (explain)

Radeon HD 6970		28160 Mpixels/sec
GeForce GTX 285 1GB		20736 Mpixels/sec
	Difference: 7424 (36%)

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: Bandwidth is the max amount of information (measured in MB per second) that can be moved over the external memory interface in a second. It's worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR memory, it must be multiplied by 2 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, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This is worked out by multiplying the total texture units by the core speed of the chip. The higher 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 in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the the core 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 rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.