Radeon RX 470 vs Radeon RX 6800

Intro

Compare all of that to the Radeon RX 6800, which features a clock speed of 1700 MHz and a GDDR6 memory speed of 2000 MHz. It also uses a 256-bit memory bus, and makes use of a 7 nm design. It features 3840 SPUs, 240 Texture Address Units, and 96 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 470		120 Watts
Radeon RX 6800		250 Watts
	Difference: 130 Watts (108%)

Memory Bandwidth

The Radeon RX 6800, in theory, should be a lot faster than the Radeon RX 470 in general. (explain)

Radeon RX 6800		524288 MB/sec
Radeon RX 470		211200 MB/sec
	Difference: 313088 (148%)

Texel Rate

The Radeon RX 6800 should be quite a bit (approximately 244%) faster with regards to texture filtering than the Radeon RX 470. (explain)

Radeon RX 6800		408000 Mtexels/sec
Radeon RX 470		118528 Mtexels/sec
	Difference: 289472 (244%)

Pixel Rate

The Radeon RX 6800 will be a lot (more or less 451%) better at anti-aliasing than the Radeon RX 470, and also able to handle higher screen resolutions without losing too much performance. (explain)

Radeon RX 6800		163200 Mpixels/sec
Radeon RX 470		29632 Mpixels/sec
	Difference: 133568 (451%)

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 (measured in MB per second) that can be transferred across the external memory interface within a second. It is worked out by multiplying the bus width by the speed of its memory. In the case of DDR type RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, 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 can be processed per second. This figure is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The higher the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.