Radeon HD 5750 1GB vs Radeon HD 5970

Intro

Compare those specs to the Radeon HD 5970, which comes with core speeds of 725 MHz on the GPU, and 1000 MHz on the 1024 MB of GDDR5 memory. It features 1600 SPUs as well as 160 Texture Address Units and 64 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5750 1GB		86 Watts
Radeon HD 5970		294 Watts
	Difference: 208 Watts (242%)

Memory Bandwidth

Performance-wise, the Radeon HD 5970 should in theory be a lot better than the Radeon HD 5750 1GB in general. (explain)

Radeon HD 5970		256000 MB/sec
Radeon HD 5750 1GB		73600 MB/sec
	Difference: 182400 (248%)

Texel Rate

The Radeon HD 5970 will be a lot (about 821%) faster with regards to AF than the Radeon HD 5750 1GB. (explain)

Radeon HD 5970		232000 Mtexels/sec
Radeon HD 5750 1GB		25200 Mtexels/sec
	Difference: 206800 (821%)

Pixel Rate

If running with a high screen resolution 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 1GB		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 max amount of data (in units of megabytes per second) that can be transferred over the external memory interface within a second. It's worked out by multiplying the card's interface width by its memory clock speed. In the case of DDR RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.