Geforce GTX 680 vs Radeon HD 6750 1GB

Intro

Compare all that to the Radeon HD 6750 1GB, which comes with GPU clock speed of 725 MHz, and 1024 MB of GDDR5 memory set to run at 1000 MHz through a 128-bit bus. It also is made up of 720 Stream Processors, 36 TAUs, and 16 Raster Operation Units.

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

In theory, the Geforce GTX 680 should be 200% quicker than the Radeon HD 6750 1GB overall, because of its higher data rate. (explain)

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

Texel Rate

The Geforce GTX 680 will be quite a bit (approximately 393%) faster with regards to 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 far. (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 megabytes per second) that can be transferred across the external memory interface in one second. It is worked out by multiplying the bus width by its memory clock speed. If the card has DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill 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 maximum fill rate.