GeForce GT 450 (OEM) vs Radeon HD 6970

Intro

Compare that to the Radeon HD 6970, which features a GPU core clock speed of 880 MHz, and 2048 MB of GDDR5 RAM running at 1375 MHz through a 256-bit bus. It also is made up of 1536 Stream Processors, 96 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 450 (OEM)		106 Watts
Radeon HD 6970		250 Watts
	Difference: 144 Watts (136%)

Memory Bandwidth

As far as performance goes, the Radeon HD 6970 should in theory be a lot better than the GeForce GT 450 (OEM) overall. (explain)

Radeon HD 6970		176000 MB/sec
GeForce GT 450 (OEM)		96000 MB/sec
	Difference: 80000 (83%)

Texel Rate

The Radeon HD 6970 should be a lot (about 346%) more effective at anisotropic filtering than the GeForce GT 450 (OEM). (explain)

Radeon HD 6970		84480 Mtexels/sec
GeForce GT 450 (OEM)		18960 Mtexels/sec
	Difference: 65520 (346%)

Pixel Rate

The Radeon HD 6970 should be a lot (more or less 49%) more effective at anti-aliasing than the GeForce GT 450 (OEM), and should be capable of handling higher screen resolutions without slowing down too much. (explain)

Radeon HD 6970		28160 Mpixels/sec
GeForce GT 450 (OEM)		18960 Mpixels/sec
	Difference: 9200 (49%)

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 largest amount of information (measured in megabytes per second) that can be moved over the external memory interface in one second. It is worked out by multiplying the card's interface width by its memory speed. If it uses DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied per second. This is calculated by multiplying the total number 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 handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly record to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.