Radeon HD 5750 512MB vs Radeon HD 6970

Intro

Compare all of that to the Radeon HD 6970, which comes with 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 comprised 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 5750 512MB		86 Watts
Radeon HD 6970		250 Watts
	Difference: 164 Watts (191%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 6970 should perform quite a bit faster than the Radeon HD 5750 512MB overall. (explain)

Radeon HD 6970		176000 MB/sec
Radeon HD 5750 512MB		73600 MB/sec
	Difference: 102400 (139%)

Texel Rate

The Radeon HD 6970 is quite a bit (approximately 235%) faster with regards to anisotropic filtering than the Radeon HD 5750 512MB. (explain)

Radeon HD 6970		84480 Mtexels/sec
Radeon HD 5750 512MB		25200 Mtexels/sec
	Difference: 59280 (235%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon HD 6970 is the winner, and very much so. (explain)

Radeon HD 6970		28160 Mpixels/sec
Radeon HD 5750 512MB		11200 Mpixels/sec
	Difference: 16960 (151%)

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 data (in units of MB per second) that can be transferred over the external memory interface in a second. It's worked out by multiplying the card's bus width by its memory clock speed. If it uses DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the 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 per second. This is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The better the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines by the the core 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 rate is also dependant on quite a few 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.