Radeon HD 5750 512MB vs Radeon HD 5970

Intro

Compare those specs to the Radeon HD 5970, which features a GPU core clock speed of 725 MHz, and 1024 MB of GDDR5 RAM set to run at 1000 MHz through a 256-bit bus. It also is made up of 1600 Stream Processors, 160 Texture Address Units, and 64 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5750 512MB		86 Watts
Radeon HD 5970		294 Watts
	Difference: 208 Watts (242%)

Memory Bandwidth

In theory, the Radeon HD 5970 will be 248% quicker than the Radeon HD 5750 512MB in general, because of its greater data rate. (explain)

Radeon HD 5970		256000 MB/sec
Radeon HD 5750 512MB		73600 MB/sec
	Difference: 182400 (248%)

Texel Rate

The Radeon HD 5970 is a lot (about 821%) more effective at anisotropic filtering than the Radeon HD 5750 512MB. (explain)

Radeon HD 5970		232000 Mtexels/sec
Radeon HD 5750 512MB		25200 Mtexels/sec
	Difference: 206800 (821%)

Pixel Rate

If using a high resolution is important to you, then the Radeon HD 5970 is a better choice, by far. (explain)

Radeon HD 5970		92800 Mpixels/sec
Radeon HD 5750 512MB		11200 Mpixels/sec
	Difference: 81600 (729%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Memory bandwidth is the largest amount of information (counted in megabytes per second) that can be transferred past the external memory interface in one second. It's calculated by multiplying the card's bus width by its memory clock speed. In the case of DDR type RAM, the result should be multiplied by 2 again. If 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 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 number of texture units by the core speed of the chip. The better the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly write to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.