Radeon HD 5750 512MB vs Radeon HD 5970

Intro

Compare those specifications to the Radeon HD 5970, which has a GPU core clock speed of 725 MHz, and 1024 MB of GDDR5 memory running at 1000 MHz through a 256-bit bus. It also features 1600 Stream Processors, 160 TAUs, 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% faster than the Radeon HD 5750 512MB overall, due to its greater bandwidth. (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 quite a bit (approximately 821%) better at AF 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

The Radeon HD 5970 is a lot (more or less 729%) better at full screen anti-aliasing than the Radeon HD 5750 512MB, and also will be able to handle higher screen resolutions while still performing well. (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 maximum amount of information (measured in megabytes per second) that can be transported across the external memory interface in one second. It's worked out by multiplying the card's bus width by its memory speed. In the case of DDR type RAM, it must 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, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.