GeForce GTX 580 3GB vs Radeon HD 5750 512MB

Intro

Compare those specifications to the Radeon HD 5750 512MB, which has GPU core speed of 700 MHz, and 512 MB of GDDR5 memory running at 1150 MHz through a 128-bit bus. It also is made up of 720(144x5) SPUs, 36 Texture Address Units, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5750 512MB		86 Watts
GeForce GTX 580 3GB		244 Watts
	Difference: 158 Watts (184%)

Memory Bandwidth

Performance-wise, the GeForce GTX 580 3GB should in theory be much superior to the Radeon HD 5750 512MB in general. (explain)

GeForce GTX 580 3GB		192384 MB/sec
Radeon HD 5750 512MB		73600 MB/sec
	Difference: 118784 (161%)

Texel Rate

The GeForce GTX 580 3GB will be much (about 96%) faster with regards to AF than the Radeon HD 5750 512MB. (explain)

GeForce GTX 580 3GB		49408 Mtexels/sec
Radeon HD 5750 512MB		25200 Mtexels/sec
	Difference: 24208 (96%)

Pixel Rate

The GeForce GTX 580 3GB is quite a bit (approximately 231%) better at AA than the Radeon HD 5750 512MB, and will be capable of handling higher resolutions better. (explain)

GeForce GTX 580 3GB		37056 Mpixels/sec
Radeon HD 5750 512MB		11200 Mpixels/sec
	Difference: 25856 (231%)

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 (measured in megabytes per second) that can be transported past the external memory interface in one second. It is worked out by multiplying the card's interface width by its memory speed. If it uses DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This figure is worked out 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 graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the most pixels the graphics 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 number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.