Radeon HD 5570 vs Radeon HD 6970

Intro

Compare all of that to the Radeon HD 6970, which features GPU core speed of 880 MHz, and 2048 MB of GDDR5 RAM running at 1375 MHz through a 256-bit bus. It also is comprised of 1536 SPUs, 96 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 6970		250 Watts
	Difference: 207 Watts (481%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 6970 should be much faster than the Radeon HD 5570 overall. (explain)

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

Texel Rate

The Radeon HD 6970 will be a lot (about 550%) faster with regards to anisotropic 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 should be a lot (more or less 442%) better at FSAA than the Radeon HD 5570, and also will be capable of handling higher resolutions while still performing well. (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: Bandwidth is the largest amount of data (in units of MB per second) that can be moved past the external memory interface in one second. It is calculated by multiplying the card's bus width by its memory speed. If the card has DDR memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The better the texel rate, the better the 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 maximum number of pixels that the graphics chip can possibly record to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs 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 fill rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.