Radeon HD 5570 vs Radeon HD 6970

Intro

Compare those specifications to the Radeon HD 6970, which features a GPU core clock speed of 880 MHz, and 2048 MB of GDDR5 RAM set to run at 1375 MHz through a 256-bit bus. It also is made up of 1536 Stream Processors, 96 Texture Address Units, 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 6970		250 Watts
	Difference: 207 Watts (481%)

Memory Bandwidth

The Radeon HD 6970, in theory, should be a lot faster than the Radeon HD 5570 in general. (explain)

Radeon HD 6970		176000 MB/sec
Radeon HD 5570		28800 MB/sec
	Difference: 147200 (511%)

Texel Rate

The Radeon HD 6970 should be a lot (about 550%) more effective at texture filtering than the Radeon HD 5570. (explain)

Radeon HD 6970		84480 Mtexels/sec
Radeon HD 5570		13000 Mtexels/sec
	Difference: 71480 (550%)

Pixel Rate

The Radeon HD 6970 will be quite a bit (more or less 442%) more effective at FSAA than the Radeon HD 5570, and should be able to handle higher resolutions without slowing down too much. (explain)

Radeon HD 6970		28160 Mpixels/sec
Radeon HD 5570		5200 Mpixels/sec
	Difference: 22960 (442%)

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 information (counted in MB per second) that can be moved over the external memory interface within a second. It's worked out by multiplying the card's bus width by its memory speed. If the card has DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. This is calculated by multiplying the total number of texture units by the core clock speed of the chip. The better the texel rate, the better the video 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 maximum amount of pixels the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.