Radeon RX 5700 vs Radeon RX 6800

Intro

Compare all that to the Radeon RX 6800, which comes with a clock frequency of 1700 MHz and a GDDR6 memory frequency of 2000 MHz. It also makes use of a 256-bit 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 5700		180 Watts
Radeon RX 6800		250 Watts
	Difference: 70 Watts (39%)

Memory Bandwidth

Theoretically speaking, the Radeon RX 6800 is 14% faster than the Radeon RX 5700 in general, because of its greater bandwidth. (explain)

Radeon RX 6800		524288 MB/sec
Radeon RX 5700		458752 MB/sec
	Difference: 65536 (14%)

Texel Rate

The Radeon RX 6800 should be quite a bit (approximately 93%) faster with regards to AF than the Radeon RX 5700. (explain)

Radeon RX 6800		408000 Mtexels/sec
Radeon RX 5700		210960 Mtexels/sec
	Difference: 197040 (93%)

Pixel Rate

The Radeon RX 6800 will be quite a bit (approximately 74%) faster with regards to anti-aliasing than the Radeon RX 5700, and also able to handle higher screen resolutions without losing too much performance. (explain)

Radeon RX 6800		163200 Mpixels/sec
Radeon RX 5700		93760 Mpixels/sec
	Difference: 69440 (74%)

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 across the external memory interface within a second. It is calculated by multiplying the bus width by its memory clock speed. In the case of DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the 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 texture map elements (texels) that are applied per second. This figure is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The better this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly write to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). 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 ability to reach the max fill rate.