Radeon HD 5750 512MB vs Radeon HD 5970

Intro

Compare that to the Radeon HD 5970, which has a clock frequency of 725 MHz and a GDDR5 memory frequency of 1000 MHz. It also makes use of a 256-bit bus, and uses a 40 nm design. It features 1600 SPUs, 160 TAUs, and 64 ROPs.

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

The Radeon HD 5970 should theoretically be a lot faster than the Radeon HD 5750 512MB in general. (explain)

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

Texel Rate

The Radeon HD 5970 should be a lot (approximately 821%) better 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 lots of anti-aliasing is important to you, then the Radeon HD 5970 is the winner, and very much so. (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: Bandwidth is the largest amount of information (counted in megabytes per second) that can be moved over the external memory interface within a second. It is calculated by multiplying the card's interface width by its memory speed. If the card has DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the faster 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 processed per second. This figure is worked out by multiplying the total number of texture units by the core speed of the chip. The higher the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly write to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the the core clock speed. 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 many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.