GeForce GTX 580 3GB vs Radeon HD 5570

Intro

Compare all that to the Radeon HD 5570, which makes use of a 40 nm design. AMD has clocked the core frequency at 650 MHz. The DDR3 memory works at a speed of 900 MHz on this specific card. It features 400(80x5) SPUs along with 20 TAUs and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5570		43 Watts
GeForce GTX 580 3GB		244 Watts
	Difference: 201 Watts (467%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 580 3GB should be 568% faster than the Radeon HD 5570 in general, because of its higher data rate. (explain)

GeForce GTX 580 3GB		192384 MB/sec
Radeon HD 5570		28800 MB/sec
	Difference: 163584 (568%)

Texel Rate

The GeForce GTX 580 3GB will be a lot (about 280%) faster with regards to anisotropic filtering than the Radeon HD 5570. (explain)

GeForce GTX 580 3GB		49408 Mtexels/sec
Radeon HD 5570		13000 Mtexels/sec
	Difference: 36408 (280%)

Pixel Rate

The GeForce GTX 580 3GB should be a lot (approximately 613%) more effective at full screen anti-aliasing than the Radeon HD 5570, and also able to handle higher resolutions without slowing down too much. (explain)

GeForce GTX 580 3GB		37056 Mpixels/sec
Radeon HD 5570		5200 Mpixels/sec
	Difference: 31856 (613%)

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 largest amount of information (measured in MB per second) that can be transferred over the external memory interface in one second. It's worked out by multiplying the card's bus width by the speed of its memory. If it uses DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.