Radeon HD 6570 (OEM) 2GB vs Radeon RX 480 4GB

Intro

Compare those specifications to the Radeon RX 480 4GB, which comes with core speeds of 1120 MHz on the GPU, and 1750 MHz on the 4096 MB of GDDR5 RAM. It features 2304 SPUs along with 144 TAUs and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6570 (OEM) 2GB		50 Watts
Radeon RX 480 4GB		150 Watts
	Difference: 100 Watts (200%)

Memory Bandwidth

Theoretically speaking, the Radeon RX 480 4GB should be 258% faster than the Radeon HD 6570 (OEM) 2GB overall, due to its higher data rate. (explain)

Radeon RX 480 4GB		229376 MB/sec
Radeon HD 6570 (OEM) 2GB		64000 MB/sec
	Difference: 165376 (258%)

Texel Rate

The Radeon RX 480 4GB will be a lot (more or less 934%) faster with regards to AF than the Radeon HD 6570 (OEM) 2GB. (explain)

Radeon RX 480 4GB		161280 Mtexels/sec
Radeon HD 6570 (OEM) 2GB		15600 Mtexels/sec
	Difference: 145680 (934%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon RX 480 4GB is the winner, by far. (explain)

Radeon RX 480 4GB		35840 Mpixels/sec
Radeon HD 6570 (OEM) 2GB		5200 Mpixels/sec
	Difference: 30640 (589%)

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 maximum amount of information (counted in megabytes per second) that can be transferred past the external memory interface within a second. It's calculated by multiplying the interface width by its memory clock speed. In the case of DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied in one second. This figure 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 graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.