GeForce GTX 285 2GB vs Radeon HD 6970

Intro

Compare those specs to the Radeon HD 6970, which comes with a GPU core clock speed of 880 MHz, and 2048 MB of GDDR5 RAM set to run at 1375 MHz through a 256-bit bus. It also features 1536 Stream Processors, 96 TAUs, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 285 2GB		204 Watts
Radeon HD 6970		250 Watts
	Difference: 46 Watts (23%)

Memory Bandwidth

The Radeon HD 6970 should theoretically be a little bit faster than the GeForce GTX 285 2GB overall. (explain)

Radeon HD 6970		176000 MB/sec
GeForce GTX 285 2GB		158976 MB/sec
	Difference: 17024 (11%)

Texel Rate

The Radeon HD 6970 will be much (about 63%) faster with regards to texture filtering than the GeForce GTX 285 2GB. (explain)

Radeon HD 6970		84480 Mtexels/sec
GeForce GTX 285 2GB		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 2GB, and very much so. (explain)

Radeon HD 6970		28160 Mpixels/sec
GeForce GTX 285 2GB		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: Memory bandwidth is the maximum amount of information (counted in megabytes per second) that can be transferred over the external memory interface within a second. The number is worked out by multiplying the bus width by its memory speed. In the case of DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This number is worked out by multiplying the total texture units of the card by the core speed of the chip. The higher the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one 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 figure is worked out by multiplying the number of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.