Geforce GTX 670 vs Radeon HD 6750

Intro

Compare all of that to the Radeon HD 6750, which makes use of a 40 nm design. AMD has set the core frequency at 725 MHz. The GDDR5 RAM works at a frequency of 1000 MHz on this particular card. It features 720 SPUs along with 36 Texture Address Units 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

In theory, the Geforce GTX 670 should be 200% quicker than the Radeon HD 6750 overall, due to its higher bandwidth. (explain)

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

Texel Rate

The Geforce GTX 670 is a lot (about 293%) better at texture filtering than the Radeon HD 6750. (explain)

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

Pixel Rate

The Geforce GTX 670 should be much (about 152%) more effective at anti-aliasing than the Radeon HD 6750, and should be capable of handling higher screen resolutions better. (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: Bandwidth is the largest amount of information (counted in MB per second) that can be transferred across the external memory interface in a second. It is calculated by multiplying the interface width by the speed of its memory. If it uses DDR type RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied in one second. This number is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.