Radeon HD 5830 vs Radeon HD 6670 (OEM)

Intro

Compare those specs to the Radeon HD 6670 (OEM), which comes with a GPU core clock speed of 800 MHz, and 512 MB of GDDR5 RAM set to run at 1000 MHz through a 128-bit bus. It also features 480 Stream Processors, 24 TAUs, and 8 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6670 (OEM)		63 Watts
Radeon HD 5830		175 Watts
	Difference: 112 Watts (178%)

Memory Bandwidth

As far as performance goes, the Radeon HD 5830 should in theory be a lot superior to the Radeon HD 6670 (OEM) in general. (explain)

Radeon HD 5830		128000 MB/sec
Radeon HD 6670 (OEM)		64000 MB/sec
	Difference: 64000 (100%)

Texel Rate

The Radeon HD 5830 will be a lot (about 133%) better at anisotropic filtering than the Radeon HD 6670 (OEM). (explain)

Radeon HD 5830		44800 Mtexels/sec
Radeon HD 6670 (OEM)		19200 Mtexels/sec
	Difference: 25600 (133%)

Pixel Rate

The Radeon HD 5830 should be much (about 100%) faster with regards to full screen anti-aliasing than the Radeon HD 6670 (OEM), and should be able to handle higher screen resolutions without losing too much performance. (explain)

Radeon HD 5830		12800 Mpixels/sec
Radeon HD 6670 (OEM)		6400 Mpixels/sec
	Difference: 6400 (100%)

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 max amount of data (in units of MB per second) that can be transferred over the external memory interface within a second. The number is worked out by multiplying the card's bus width by the speed of its memory. In the case of DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This is calculated by multiplying the total amount of 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 processed in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly write to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.