GeForce GTX 660 Ti vs Radeon HD 6750

Intro

Compare those specifications to the Radeon HD 6750, which comes with GPU core speed of 725 MHz, and 512 MB of GDDR5 RAM running at 1000 MHz through a 128-bit bus. It also is made up of 720 SPUs, 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		86 Watts
GeForce GTX 660 Ti		150 Watts
	Difference: 64 Watts (74%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 660 Ti is 125% quicker than the Radeon HD 6750 in general, because of its higher bandwidth. (explain)

GeForce GTX 660 Ti		144000 MB/sec
Radeon HD 6750		64000 MB/sec
	Difference: 80000 (125%)

Texel Rate

The GeForce GTX 660 Ti will be quite a bit (more or less 293%) faster with regards to texture filtering than the Radeon HD 6750. (explain)

GeForce GTX 660 Ti		102480 Mtexels/sec
Radeon HD 6750		26100 Mtexels/sec
	Difference: 76380 (293%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GTX 660 Ti is superior to the Radeon HD 6750, by far. (explain)

GeForce GTX 660 Ti		21960 Mpixels/sec
Radeon HD 6750		11600 Mpixels/sec
	Difference: 10360 (89%)

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 max amount of data (counted in MB per second) that can be transferred over the external memory interface in a second. It is calculated by multiplying the bus width by its memory clock speed. In the case of DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. This is worked out by multiplying the total texture units by the core speed of the chip. The higher this number, the better the 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 could possibly write to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Render Output Units by the the core 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 lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.