Radeon HD 6670 (OEM) 1GB vs Radeon RX 590

Intro

Compare those specs to the Radeon RX 590, which has GPU clock speed of 1469 MHz, and 8192 MB of GDDR5 memory set to run at 2000 MHz through a 256-bit bus. It also is made up of 2304 SPUs, 144 TAUs, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6670 (OEM) 1GB		63 Watts
Radeon RX 590		175 Watts
	Difference: 112 Watts (178%)

Memory Bandwidth

The Radeon RX 590 should theoretically perform a lot faster than the Radeon HD 6670 (OEM) 1GB overall. (explain)

Radeon RX 590		262144 MB/sec
Radeon HD 6670 (OEM) 1GB		64000 MB/sec
	Difference: 198144 (310%)

Texel Rate

The Radeon RX 590 will be quite a bit (about 1002%) more effective at texture filtering than the Radeon HD 6670 (OEM) 1GB. (explain)

Radeon RX 590		211536 Mtexels/sec
Radeon HD 6670 (OEM) 1GB		19200 Mtexels/sec
	Difference: 192336 (1002%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon RX 590 is the winner, by far. (explain)

Radeon RX 590		47008 Mpixels/sec
Radeon HD 6670 (OEM) 1GB		6400 Mpixels/sec
	Difference: 40608 (635%)

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 information (in units of MB per second) that can be moved past the external memory interface in one second. It is worked out by multiplying the card's bus width by the speed of its memory. If the card has DDR RAM, 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 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 processed per second. This number is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly record to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.