Radeon HD 6670 (OEM) 1GB vs Radeon RX 480 4GB

Intro

Compare all that to the Radeon RX 480 4GB, which has core clock speeds of 1120 MHz on the GPU, and 1750 MHz on the 4096 MB of GDDR5 memory. It features 2304 SPUs along with 144 TAUs and 32 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6670 (OEM) 1GB		63 Watts
Radeon RX 480 4GB		150 Watts
	Difference: 87 Watts (138%)

Memory Bandwidth

The Radeon RX 480 4GB should theoretically be a lot faster than the Radeon HD 6670 (OEM) 1GB overall. (explain)

Radeon RX 480 4GB		229376 MB/sec
Radeon HD 6670 (OEM) 1GB		64000 MB/sec
	Difference: 165376 (258%)

Texel Rate

The Radeon RX 480 4GB will be much (more or less 740%) faster with regards to texture filtering than the Radeon HD 6670 (OEM) 1GB. (explain)

Radeon RX 480 4GB		161280 Mtexels/sec
Radeon HD 6670 (OEM) 1GB		19200 Mtexels/sec
	Difference: 142080 (740%)

Pixel Rate

The Radeon RX 480 4GB is much (more or less 460%) better at anti-aliasing than the Radeon HD 6670 (OEM) 1GB, and able to handle higher resolutions more effectively. (explain)

Radeon RX 480 4GB		35840 Mpixels/sec
Radeon HD 6670 (OEM) 1GB		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: Memory bandwidth is the max amount of information (counted in MB per second) that can be moved over the external memory interface in a second. It's worked out by multiplying the interface width by its memory clock speed. If it uses DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This figure is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The better the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes 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, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.