Radeon HD 5570 vs Radeon HD 6870

Intro

Compare those specs to the Radeon HD 6870, which features clock speeds of 900 MHz on the GPU, and 1050 MHz on the 1024 MB of GDDR5 RAM. It features 1120 SPUs as well as 56 TAUs and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5570		43 Watts
Radeon HD 6870		151 Watts
	Difference: 108 Watts (251%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 6870 will be 367% faster than the Radeon HD 5570 overall, due to its greater data rate. (explain)

Radeon HD 6870		134400 MB/sec
Radeon HD 5570		28800 MB/sec
	Difference: 105600 (367%)

Texel Rate

The Radeon HD 6870 is quite a bit (more or less 288%) more effective at anisotropic filtering than the Radeon HD 5570. (explain)

Radeon HD 6870		50400 Mtexels/sec
Radeon HD 5570		13000 Mtexels/sec
	Difference: 37400 (288%)

Pixel Rate

The Radeon HD 6870 will be quite a bit (about 454%) better at AA than the Radeon HD 5570, and also will be capable of handling higher screen resolutions while still performing well. (explain)

Radeon HD 6870		28800 Mpixels/sec
Radeon HD 5570		5200 Mpixels/sec
	Difference: 23600 (454%)

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 megabytes per second) that can be transported across the external memory interface within a second. It is calculated by multiplying the card's interface width by its memory speed. In the case of DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster 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 per second. This figure is calculated by multiplying the total number of texture units 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 per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly record to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.