Radeon HD 5750 512MB vs Radeon HD 6970

Intro

Compare all of that to the Radeon HD 6970, which comes with core clock speeds of 880 MHz on the GPU, and 1375 MHz on the 2048 MB of GDDR5 memory. It features 1536 SPUs as well as 96 TAUs 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 is 139% faster than the Radeon HD 5750 512MB overall, because of its greater bandwidth. (explain)

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

Texel Rate

The Radeon HD 6970 should be quite a bit (more or less 235%) faster with regards to texture 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

The Radeon HD 6970 will be quite a bit (about 151%) faster with regards to FSAA than the Radeon HD 5750 512MB, and should be able to handle higher resolutions without slowing down too much. (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: Bandwidth is the maximum amount of data (in units of MB per second) that can be transported across the external memory interface in a second. It's calculated by multiplying the interface width by the speed of its memory. If it uses DDR memory, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This figure is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The higher this number, 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 most pixels the video card could possibly write to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on lots of 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.