Radeon HD 5670 vs Radeon HD 5830

Intro

Compare all of that to the Radeon HD 5830, which uses a 40 nm design. AMD has set the core frequency at 800 MHz. The GDDR5 RAM runs at a frequency of 1000 MHz on this model. It features 1120(224x5) SPUs as well as 56 TAUs and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5670		61 Watts
Radeon HD 5830		175 Watts
	Difference: 114 Watts (187%)

Memory Bandwidth

Theoretically, the Radeon HD 5830 should be a lot faster than the Radeon HD 5670 overall. (explain)

Radeon HD 5830		128000 MB/sec
Radeon HD 5670		64000 MB/sec
	Difference: 64000 (100%)

Texel Rate

The Radeon HD 5830 is a lot (approximately 189%) faster with regards to AF than the Radeon HD 5670. (explain)

Radeon HD 5830		44800 Mtexels/sec
Radeon HD 5670		15500 Mtexels/sec
	Difference: 29300 (189%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon HD 5830 is a better choice, by far. (explain)

Radeon HD 5830		12800 Mpixels/sec
Radeon HD 5670		6200 Mpixels/sec
	Difference: 6600 (106%)

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: Bandwidth is the largest amount of information (counted in MB per second) that can be transferred past the external memory interface in a second. The number is calculated by multiplying the bus width by the speed of its memory. If the card has DDR type memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better 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 are applied per second. This is calculated by multiplying the total texture units by the core speed of the chip. The better the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines by the the core 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 also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.