Radeon HD 5570 vs Radeon HD 5830

Intro

Compare those specifications to the Radeon HD 5830, which features a clock frequency of 800 MHz and a GDDR5 memory frequency of 1000 MHz. It also makes use of a 256-bit memory bus, and uses a 40 nm design. It features 1120(224x5) SPUs, 56 TAUs, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5570		43 Watts
Radeon HD 5830		175 Watts
	Difference: 132 Watts (307%)

Memory Bandwidth

In theory, the Radeon HD 5830 should be 344% quicker than the Radeon HD 5570 overall, due to its greater data rate. (explain)

Radeon HD 5830		128000 MB/sec
Radeon HD 5570		28800 MB/sec
	Difference: 99200 (344%)

Texel Rate

The Radeon HD 5830 is much (more or less 245%) better at texture filtering than the Radeon HD 5570. (explain)

Radeon HD 5830		44800 Mtexels/sec
Radeon HD 5570		13000 Mtexels/sec
	Difference: 31800 (245%)

Pixel Rate

The Radeon HD 5830 should be quite a bit (more or less 146%) more effective at anti-aliasing than the Radeon HD 5570, and will be able to handle higher screen resolutions better. (explain)

Radeon HD 5830		12800 Mpixels/sec
Radeon HD 5570		5200 Mpixels/sec
	Difference: 7600 (146%)

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.

Price Comparison

Specifications

Memory Bandwidth: Memory bandwidth is the maximum amount of information (in units of MB per second) that can be transferred across the external memory interface in one second. It's worked out by multiplying the card's bus width by its memory clock speed. In the case of DDR RAM, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. This number is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The better this number, 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 can possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.