Radeon R5 M255 vs Radeon RX 6900 XT

Intro

Compare all of that to the Radeon RX 6900 XT, which comes with a clock speed of 1825 MHz and a GDDR6 memory speed of 2000 MHz. It also features a 256-bit bus, and uses a 7 nm design. It is comprised of 5120 SPUs, 320 Texture Address Units, and 128 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon RX 6900 XT should in theory perform much faster than the Radeon R5 M255 in general. (explain)

Radeon RX 6900 XT		524288 MB/sec
Radeon R5 M255		16000 MB/sec
	Difference: 508288 (3177%)

Texel Rate

The Radeon RX 6900 XT should be much (about 3006%) better at anisotropic filtering than the Radeon R5 M255. (explain)

Radeon RX 6900 XT		584000 Mtexels/sec
Radeon R5 M255		18800 Mtexels/sec
	Difference: 565200 (3006%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon RX 6900 XT is superior to the Radeon R5 M255, and very much so. (explain)

Radeon RX 6900 XT		233600 Mpixels/sec
Radeon R5 M255		7520 Mpixels/sec
	Difference: 226080 (3006%)

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 maximum amount of data (measured in megabytes per second) that can be moved over the external memory interface within a second. It is calculated by multiplying the card's interface width by its memory clock speed. In the case of DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed in one second. This figure is calculated 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 handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly record to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.