Geforce GTX 680 vs Radeon HD 6750 1GB

Intro

Compare those specs to the Radeon HD 6750 1GB, which comes with GPU core speed of 725 MHz, and 1024 MB of GDDR5 memory running at 1000 MHz through a 128-bit bus. It also is made up of 720 SPUs, 36 Texture Address Units, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6750 1GB		86 Watts
Geforce GTX 680		195 Watts
	Difference: 109 Watts (127%)

Memory Bandwidth

Theoretically speaking, the Geforce GTX 680 should be much faster than the Radeon HD 6750 1GB overall. (explain)

Geforce GTX 680		192256 MB/sec
Radeon HD 6750 1GB		64000 MB/sec
	Difference: 128256 (200%)

Texel Rate

The Geforce GTX 680 is quite a bit (more or less 393%) better at texture filtering than the Radeon HD 6750 1GB. (explain)

Geforce GTX 680		128768 Mtexels/sec
Radeon HD 6750 1GB		26100 Mtexels/sec
	Difference: 102668 (393%)

Pixel Rate

If using a high resolution is important to you, then the Geforce GTX 680 is superior to the Radeon HD 6750 1GB, by a large margin. (explain)

Geforce GTX 680		32192 Mpixels/sec
Radeon HD 6750 1GB		11600 Mpixels/sec
	Difference: 20592 (178%)

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 transported past the external memory interface within a second. The number is calculated by multiplying the card's interface width by its memory speed. If the card has DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The better this number, the better the 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 most pixels that the graphics chip can possibly write to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.