GeForce GTX 580 vs Radeon HD 5570

Intro

Compare all of that to the Radeon HD 5570, which makes use of a 40 nm design. AMD has set the core frequency at 650 MHz. The DDR3 RAM runs at a speed of 900 MHz on this particular model. It features 400(80x5) SPUs as well as 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		244 Watts
	Difference: 201 Watts (467%)

Memory Bandwidth

The GeForce GTX 580, in theory, should be a lot faster than the Radeon HD 5570 overall. (explain)

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

Texel Rate

The GeForce GTX 580 will be much (approximately 280%) better at anisotropic filtering than the Radeon HD 5570. (explain)

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

Pixel Rate

The GeForce GTX 580 will be much (about 613%) faster with regards to AA than the Radeon HD 5570, and also capable of handling higher resolutions while still performing well. (explain)

GeForce GTX 580		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 (counted in megabytes per second) that can be transported past the external memory interface within a second. It's worked out by multiplying the card's bus width by the speed of its memory. If the card has DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher 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 texture map elements (texels) that can be applied in one second. This is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The higher this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.