Radeon RX 550 vs Radeon RX 7900 XT

Intro

Compare those specifications to the Radeon RX 7900 XT, which features a clock frequency of 1500 MHz and a GDDR6 memory speed of 2500 MHz. It also features a 320-bit bus, and uses a 5 nm design. It is made up of 5376 SPUs, 336 Texture Address Units, and 192 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 550		50 Watts
Radeon RX 7900 XT		300 Watts
	Difference: 250 Watts (500%)

Memory Bandwidth

Performance-wise, the Radeon RX 7900 XT should in theory be quite a bit superior to the Radeon RX 550 in general. (explain)

Radeon RX 7900 XT		819200 MB/sec
Radeon RX 550		114688 MB/sec
	Difference: 704512 (614%)

Texel Rate

The Radeon RX 7900 XT is a lot (about 1332%) more effective at AF than the Radeon RX 550. (explain)

Radeon RX 7900 XT		504000 Mtexels/sec
Radeon RX 550		35200 Mtexels/sec
	Difference: 468800 (1332%)

Pixel Rate

The Radeon RX 7900 XT is much (approximately 1536%) faster with regards to full screen anti-aliasing than the Radeon RX 550, and also should be capable of handling higher screen resolutions more effectively. (explain)

Radeon RX 7900 XT		288000 Mpixels/sec
Radeon RX 550		17600 Mpixels/sec
	Difference: 270400 (1536%)

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 data (counted in megabytes per second) that can be moved over the external memory interface within a second. The number is worked out by multiplying the bus width by its memory speed. In the case of DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher 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 texture map elements (texels) that are processed per second. This is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The higher this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly write to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.