Radeon HD 5670 vs Radeon HD 5830

Intro

Compare that to the Radeon HD 5830, which makes use of a 40 nm design. AMD has set the core frequency at 800 MHz. The GDDR5 memory is set to run at a frequency of 1000 MHz on this specific model. It features 1120(224x5) SPUs along with 56 Texture Address Units 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

Performance-wise, the Radeon HD 5830 should theoretically be a lot superior to 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 (more or less 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 lots of anti-aliasing is important to you, then the Radeon HD 5830 is superior to the Radeon HD 5670, by a large margin. (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: Memory bandwidth is the largest amount of information (in units of MB per second) that can be transferred past the external memory interface in one second. The number is calculated by multiplying the interface width by its memory speed. If it uses DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied in one second. This is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The better this number, the better the 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 amount of pixels the graphics card can possibly record to its local memory in one 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 filling the screen with pixels (the image). The actual pixel fill rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.