GeForce GT 450 (OEM) vs Radeon HD 6970

Intro

Compare those specs to the Radeon HD 6970, which comes with core clock speeds of 880 MHz on the GPU, and 1375 MHz on the 2048 MB of GDDR5 RAM. It features 1536 SPUs as well as 96 TAUs and 32 ROPs.

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

The Radeon HD 6970 should theoretically perform a lot faster 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 is much (approximately 346%) faster with regards to 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 is much (more or less 49%) more effective at AA than the GeForce GT 450 (OEM), and also capable of handling higher resolutions more effectively. (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 data (counted in megabytes per second) that can be transported past the external memory interface within a second. It is calculated by multiplying the bus width by its memory clock speed. If the card has DDR type memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the faster 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 texture map elements (texels) that are processed per second. This is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The higher this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly write to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.