Radeon HD 6670 (OEM) vs Radeon RX 480 4GB

Intro

Compare those specs to the Radeon RX 480 4GB, which comes with GPU core speed of 1120 MHz, and 4096 MB of GDDR5 memory running at 1750 MHz through a 256-bit bus. It also is comprised of 2304 Stream Processors, 144 TAUs, and 32 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 RX 480 4GB		150 Watts
	Difference: 87 Watts (138%)

Memory Bandwidth

As far as performance goes, the Radeon RX 480 4GB should theoretically be much superior to the Radeon HD 6670 (OEM) in general. (explain)

Radeon RX 480 4GB		229376 MB/sec
Radeon HD 6670 (OEM)		64000 MB/sec
	Difference: 165376 (258%)

Texel Rate

The Radeon RX 480 4GB will be much (about 740%) faster with regards to AF than the Radeon HD 6670 (OEM). (explain)

Radeon RX 480 4GB		161280 Mtexels/sec
Radeon HD 6670 (OEM)		19200 Mtexels/sec
	Difference: 142080 (740%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon RX 480 4GB is a better choice, and very much so. (explain)

Radeon RX 480 4GB		35840 Mpixels/sec
Radeon HD 6670 (OEM)		6400 Mpixels/sec
	Difference: 29440 (460%)

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 maximum amount of data (counted in MB per second) that can be transported over the external memory interface in a second. It is worked out by multiplying the interface width by its memory clock speed. If the card has DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, 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 are applied per second. This figure is worked out by multiplying the total number of texture units by the core clock speed of the chip. The better the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly record to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.