GeForce GTX 570 vs Radeon HD 5670

Intro

Compare those specifications to the Radeon HD 5670, which has GPU clock speed of 775 MHz, and 1024 MB of GDDR5 memory running at 1000 MHz through a 128-bit bus. It also is comprised of 400(80x5) SPUs, 20 TAUs, and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5670		61 Watts
GeForce GTX 570		219 Watts
	Difference: 158 Watts (259%)

Memory Bandwidth

In theory, the GeForce GTX 570 will be 138% faster than the Radeon HD 5670 in general, due to its greater data rate. (explain)

GeForce GTX 570		152000 MB/sec
Radeon HD 5670		64000 MB/sec
	Difference: 88000 (138%)

Texel Rate

The GeForce GTX 570 is much (about 183%) better at texture filtering than the Radeon HD 5670. (explain)

GeForce GTX 570		43920 Mtexels/sec
Radeon HD 5670		15500 Mtexels/sec
	Difference: 28420 (183%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTX 570 is superior to the Radeon HD 5670, and very much so. (explain)

GeForce GTX 570		29280 Mpixels/sec
Radeon HD 5670		6200 Mpixels/sec
	Difference: 23080 (372%)

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: Bandwidth is the max amount of data (counted in megabytes per second) that can be transferred across the external memory interface in a second. The number is worked out by multiplying the bus width by its memory clock speed. In the case of DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed in one second. This figure is worked out by multiplying the total number of texture units by the core clock speed of the chip. The higher the texel rate, the better the 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 card can possibly write to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of ROPs by the the core speed of the card. 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 also depends on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.