Radeon HD 6570 (OEM) 2GB vs Radeon RX 470 4GB

Intro

Compare those specs to the Radeon RX 470 4GB, which comes with a clock speed of 926 MHz and a GDDR5 memory speed of 1650 MHz. It also makes use of a 256-bit memory bus, and makes use of a 14 nm design. It is comprised 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 6570 (OEM) 2GB		50 Watts
Radeon RX 470 4GB		120 Watts
	Difference: 70 Watts (140%)

Memory Bandwidth

In theory, the Radeon RX 470 4GB should perform a lot faster than the Radeon HD 6570 (OEM) 2GB overall. (explain)

Radeon RX 470 4GB		211200 MB/sec
Radeon HD 6570 (OEM) 2GB		64000 MB/sec
	Difference: 147200 (230%)

Texel Rate

The Radeon RX 470 4GB should be a lot (approximately 660%) faster with regards to anisotropic filtering than the Radeon HD 6570 (OEM) 2GB. (explain)

Radeon RX 470 4GB		118528 Mtexels/sec
Radeon HD 6570 (OEM) 2GB		15600 Mtexels/sec
	Difference: 102928 (660%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon RX 470 4GB is superior to the Radeon HD 6570 (OEM) 2GB, by a large margin. (explain)

Radeon RX 470 4GB		29632 Mpixels/sec
Radeon HD 6570 (OEM) 2GB		5200 Mpixels/sec
	Difference: 24432 (470%)

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 (in units of megabytes per second) that can be transferred across the external memory interface in a second. The number is worked out by multiplying the bus width by the speed of its memory. If it uses DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, 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 figure is calculated by multiplying the total number of texture units by the core clock speed of the chip. The higher this number, the better the graphics 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 maximum amount of pixels the graphics card can possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.