Radeon RX 5500 vs Radeon RX 6800 XT

Intro

Compare those specifications to the Radeon RX 6800 XT, which makes use of a 7 nm design. AMD has clocked the core speed at 1825 MHz. The GDDR6 memory is set to run at a speed of 2000 MHz on this particular model. It features 4608 SPUs as well as 288 Texture Address Units and 128 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 5500		150 Watts
Radeon RX 6800 XT		300 Watts
	Difference: 150 Watts (100%)

Memory Bandwidth

Theoretically speaking, the Radeon RX 6800 XT will be 129% faster than the Radeon RX 5500 overall, due to its greater bandwidth. (explain)

Radeon RX 6800 XT		524288 MB/sec
Radeon RX 5500		229376 MB/sec
	Difference: 294912 (129%)

Texel Rate

The Radeon RX 6800 XT should be much (about 258%) more effective at AF than the Radeon RX 5500. (explain)

Radeon RX 6800 XT		525600 Mtexels/sec
Radeon RX 5500		146960 Mtexels/sec
	Difference: 378640 (258%)

Pixel Rate

The Radeon RX 6800 XT is a lot (approximately 337%) faster with regards to full screen anti-aliasing than the Radeon RX 5500, and also able to handle higher screen resolutions without losing too much performance. (explain)

Radeon RX 6800 XT		233600 Mpixels/sec
Radeon RX 5500		53440 Mpixels/sec
	Difference: 180160 (337%)

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 max amount of information (counted in megabytes per second) that can be transferred past the external memory interface in a second. The number is worked out by multiplying the interface width by its memory speed. If it uses DDR type RAM, it must 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 AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed 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 the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that 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 number 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 drawing the pixels (image) on the screen. The actual pixel rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.