GeForce GTX 580 vs Radeon HD 6750 1GB

Intro

Compare those specs to the Radeon HD 6750 1GB, which has a clock speed of 725 MHz and a GDDR5 memory frequency of 1000 MHz. It also makes use of a 128-bit bus, and uses a 40 nm design. It 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 1GB		86 Watts
GeForce GTX 580		244 Watts
	Difference: 158 Watts (184%)

Memory Bandwidth

In theory, the GeForce GTX 580 will be 201% quicker than the Radeon HD 6750 1GB in general, because of its greater bandwidth. (explain)

GeForce GTX 580		192384 MB/sec
Radeon HD 6750 1GB		64000 MB/sec
	Difference: 128384 (201%)

Texel Rate

The GeForce GTX 580 will be a lot (more or less 89%) faster with regards to AF than the Radeon HD 6750 1GB. (explain)

GeForce GTX 580		49408 Mtexels/sec
Radeon HD 6750 1GB		26100 Mtexels/sec
	Difference: 23308 (89%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTX 580 is superior to the Radeon HD 6750 1GB, by a large margin. (explain)

GeForce GTX 580		37056 Mpixels/sec
Radeon HD 6750 1GB		11600 Mpixels/sec
	Difference: 25456 (219%)

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 data (in units of MB per second) that can be moved across the external memory interface in a second. It's worked out by multiplying the card's bus width by its memory clock speed. If it uses DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed in one second. This number is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher this number, 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 most pixels that the graphics chip could possibly record to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.