Radeon HD 5830 vs Radeon HD 6670 (OEM)

Intro

Compare those specifications to the Radeon HD 6670 (OEM), which uses a 40 nm design. AMD has set the core speed at 800 MHz. The GDDR5 RAM works at a frequency of 1000 MHz on this card. It features 480 SPUs as well as 24 TAUs and 8 Rasterization Operator 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

Performance-wise, the Radeon HD 5830 should theoretically be a lot superior to the Radeon HD 6670 (OEM) overall. (explain)

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

Texel Rate

The Radeon HD 5830 should be a lot (approximately 133%) faster with regards to 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

If running with lots of anti-aliasing is important to you, then the Radeon HD 5830 is the winner, by a large margin. (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: Bandwidth is the largest amount of data (measured in megabytes per second) that can be transferred across the external memory interface in a second. It is calculated by multiplying the card's interface width by the speed of its memory. If the card has DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the faster 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 are processed in one second. This number is worked out 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 graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as 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.