Radeon HD 5750 1GB vs Radeon HD 5970

Intro

Compare all that to the Radeon HD 5970, which features a clock speed of 725 MHz and a GDDR5 memory speed of 1000 MHz. It also uses a 256-bit bus, and makes use of 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 1GB		86 Watts
Radeon HD 5970		294 Watts
	Difference: 208 Watts (242%)

Memory Bandwidth

As far as performance goes, the Radeon HD 5970 should theoretically be much 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 is quite a bit (about 821%) faster with regards to anisotropic filtering 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

The Radeon HD 5970 will be a lot (about 729%) more effective at FSAA than the Radeon HD 5750 1GB, and also able to handle higher resolutions better. (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 largest amount of information (in units of MB per second) that can be moved past the external memory interface in one second. The number is worked out by multiplying the bus width by its memory clock speed. If the card has DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly record to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.