Radeon HD 6670 (OEM) vs Radeon RX 470 4GB

Intro

Compare all of that to the Radeon RX 470 4GB, which features a core clock speed of 926 MHz and a GDDR5 memory speed of 1650 MHz. It also uses a 256-bit bus, and uses a 14 nm design. It is made up of 2048 SPUs, 128 TAUs, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6670 (OEM)		63 Watts
Radeon RX 470 4GB		120 Watts
	Difference: 57 Watts (90%)

Memory Bandwidth

Theoretically speaking, the Radeon RX 470 4GB is 230% quicker than the Radeon HD 6670 (OEM) overall, due to its greater bandwidth. (explain)

Radeon RX 470 4GB		211200 MB/sec
Radeon HD 6670 (OEM)		64000 MB/sec
	Difference: 147200 (230%)

Texel Rate

The Radeon RX 470 4GB should be a lot (more or less 517%) faster with regards to anisotropic filtering than the Radeon HD 6670 (OEM). (explain)

Radeon RX 470 4GB		118528 Mtexels/sec
Radeon HD 6670 (OEM)		19200 Mtexels/sec
	Difference: 99328 (517%)

Pixel Rate

The Radeon RX 470 4GB should be quite a bit (about 363%) faster with regards to full screen anti-aliasing than the Radeon HD 6670 (OEM), and also capable of handling higher screen resolutions more effectively. (explain)

Radeon RX 470 4GB		29632 Mpixels/sec
Radeon HD 6670 (OEM)		6400 Mpixels/sec
	Difference: 23232 (363%)

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 (counted in MB per second) that can be transported across the external memory interface in one second. It's worked out by multiplying the card's bus width by its memory clock speed. In the case of DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, 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 texture map elements (texels) that are processed in one second. This is worked out by multiplying the total texture units by the core clock speed of the chip. The higher 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 a second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly write to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.