GeForce GTX 275 vs Radeon HD 6750

Intro

Compare all that to the Radeon HD 6750, which has a GPU core clock speed of 725 MHz, and 512 MB of GDDR5 RAM set to run 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 275		219 Watts
	Difference: 133 Watts (155%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 275 will be 98% faster than the Radeon HD 6750 in general, due to its higher data rate. (explain)

GeForce GTX 275		127008 MB/sec
Radeon HD 6750		64000 MB/sec
	Difference: 63008 (98%)

Texel Rate

The GeForce GTX 275 will be a lot (about 94%) better at AF than the Radeon HD 6750. (explain)

GeForce GTX 275		50640 Mtexels/sec
Radeon HD 6750		26100 Mtexels/sec
	Difference: 24540 (94%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce GTX 275 is superior to the Radeon HD 6750, by a large margin. (explain)

GeForce GTX 275		17724 Mpixels/sec
Radeon HD 6750		11600 Mpixels/sec
	Difference: 6124 (53%)

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 maximum amount of information (counted in MB per second) that can be transported across the external memory interface in one second. The number is worked out by multiplying the card's interface width by its memory speed. If the card has DDR type memory, it must be multiplied by 2 again. If 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 processed 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 video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly write to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the the core clock speed. 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 rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.