GeForce GT 450 (OEM) vs Radeon HD 6950

Intro

Compare those specs to the Radeon HD 6950, which comes with GPU clock speed of 800 MHz, and 1024 MB of GDDR5 RAM set to run at 1250 MHz through a 256-bit bus. It also is made up of 1408 SPUs, 88 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 6950		200 Watts
	Difference: 94 Watts (89%)

Memory Bandwidth

The Radeon HD 6950, in theory, should perform quite a bit faster than the GeForce GT 450 (OEM) in general. (explain)

Radeon HD 6950		160000 MB/sec
GeForce GT 450 (OEM)		96000 MB/sec
	Difference: 64000 (67%)

Texel Rate

The Radeon HD 6950 is quite a bit (approximately 271%) faster with regards to anisotropic filtering than the GeForce GT 450 (OEM). (explain)

Radeon HD 6950		70400 Mtexels/sec
GeForce GT 450 (OEM)		18960 Mtexels/sec
	Difference: 51440 (271%)

Pixel Rate

If using a high resolution is important to you, then the Radeon HD 6950 is superior to the GeForce GT 450 (OEM), by far. (explain)

Radeon HD 6950		25600 Mpixels/sec
GeForce GT 450 (OEM)		18960 Mpixels/sec
	Difference: 6640 (35%)

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 (in units of megabytes per second) that can be transported over the external memory interface in a second. It is worked out by multiplying the card's bus width by its memory speed. In the case of DDR memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly write to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on many 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.