Radeon RX 470 4GB vs Radeon RX 6800 XT

Intro

Compare that to the Radeon RX 6800 XT, which makes use of a 7 nm design. AMD has set the core frequency at 1825 MHz. The GDDR6 memory runs at a speed of 2000 MHz on this particular model. It features 4608 SPUs along with 288 TAUs and 128 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 470 4GB		120 Watts
Radeon RX 6800 XT		300 Watts
	Difference: 180 Watts (150%)

Memory Bandwidth

The Radeon RX 6800 XT should in theory be a lot faster than the Radeon RX 470 4GB overall. (explain)

Radeon RX 6800 XT		524288 MB/sec
Radeon RX 470 4GB		211200 MB/sec
	Difference: 313088 (148%)

Texel Rate

The Radeon RX 6800 XT should be much (approximately 343%) more effective at texture filtering than the Radeon RX 470 4GB. (explain)

Radeon RX 6800 XT		525600 Mtexels/sec
Radeon RX 470 4GB		118528 Mtexels/sec
	Difference: 407072 (343%)

Pixel Rate

The Radeon RX 6800 XT should be quite a bit (approximately 688%) more effective at full screen anti-aliasing than the Radeon RX 470 4GB, and should be able to handle higher resolutions while still performing well. (explain)

Radeon RX 6800 XT		233600 Mpixels/sec
Radeon RX 470 4GB		29632 Mpixels/sec
	Difference: 203968 (688%)

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 largest amount of information (counted in megabytes per second) that can be moved past the external memory interface in one second. It's worked out by multiplying the interface width by the speed of its memory. In the case of DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR 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 amount of texture units of the card by the core speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.