Radeon HD 6670 (OEM) vs Radeon RX 560

Intro

Compare those specs to the Radeon RX 560, which has a clock speed of 1175 MHz and a GDDR5 memory speed of 1750 MHz. It also makes use of a 128-bit bus, and makes use of a 14 nm design. It features 1024 SPUs, 64 TAUs, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6670 (OEM)		63 Watts
Radeon RX 560		80 Watts
	Difference: 17 Watts (27%)

Memory Bandwidth

Theoretically speaking, the Radeon RX 560 will be 79% quicker than the Radeon HD 6670 (OEM) in general, due to its greater data rate. (explain)

Radeon RX 560		114688 MB/sec
Radeon HD 6670 (OEM)		64000 MB/sec
	Difference: 50688 (79%)

Texel Rate

The Radeon RX 560 is quite a bit (more or less 292%) more effective at anisotropic filtering than the Radeon HD 6670 (OEM). (explain)

Radeon RX 560		75200 Mtexels/sec
Radeon HD 6670 (OEM)		19200 Mtexels/sec
	Difference: 56000 (292%)

Pixel Rate

The Radeon RX 560 is much (about 194%) faster with regards to FSAA than the Radeon HD 6670 (OEM), and will be capable of handling higher resolutions better. (explain)

Radeon RX 560		18800 Mpixels/sec
Radeon HD 6670 (OEM)		6400 Mpixels/sec
	Difference: 12400 (194%)

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 max amount of data (in units of megabytes per second) that can be moved across the external memory interface in one second. The number is worked out by multiplying the card's interface width by its memory speed. In the case of DDR memory, it should be multiplied by 2 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, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied in one second. This is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The better this number, the better the card will be at handling 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 its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.