Radeon R5 M255 vs Radeon RX 6900 XT

Intro

Compare all of that to the Radeon RX 6900 XT, which features a core clock frequency of 1825 MHz and a GDDR6 memory frequency of 2000 MHz. It also makes use of a 256-bit bus, and uses a 7 nm design. It is made up of 5120 SPUs, 320 TAUs, and 128 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Performance-wise, the Radeon RX 6900 XT should theoretically be much better than the Radeon R5 M255 overall. (explain)

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

Texel Rate

The Radeon RX 6900 XT will be much (about 3006%) faster with regards to texture 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 a high resolution is important to you, then the Radeon RX 6900 XT is a better choice, 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 (counted in MB per second) that can be moved over the external memory interface in a second. It is calculated by multiplying the interface width by its memory speed. If the card has DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per second. This number is calculated 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 graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.