Geforce GTX 670 vs Radeon HD 6750

Intro

Compare that to the Radeon HD 6750, which uses a 40 nm design. AMD has clocked the core frequency at 725 MHz. The GDDR5 RAM is set to run at a frequency of 1000 MHz on this particular model. It features 720 SPUs as well as 36 TAUs and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6750		86 Watts
Geforce GTX 670		170 Watts
	Difference: 84 Watts (98%)

Memory Bandwidth

Theoretically speaking, the Geforce GTX 670 should perform much faster than the Radeon HD 6750 in general. (explain)

Geforce GTX 670		192000 MB/sec
Radeon HD 6750		64000 MB/sec
	Difference: 128000 (200%)

Texel Rate

The Geforce GTX 670 will be a lot (about 293%) better at AF than the Radeon HD 6750. (explain)

Geforce GTX 670		102480 Mtexels/sec
Radeon HD 6750		26100 Mtexels/sec
	Difference: 76380 (293%)

Pixel Rate

If running with a high screen resolution is important to you, then the Geforce GTX 670 is a better choice, by a large margin. (explain)

Geforce GTX 670		29280 Mpixels/sec
Radeon HD 6750		11600 Mpixels/sec
	Difference: 17680 (152%)

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 largest amount of data (in units of MB per second) that can be transported across the external memory interface in a second. It is worked out by multiplying the card's bus width by the speed of its memory. In the case of DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied per second. This figure 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 one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly write to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the the card's 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 output rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.