Radeon R5 M255 vs Radeon RX 6900 XT

Intro

Compare that to the Radeon RX 6900 XT, which has a clock speed of 1825 MHz and a GDDR6 memory speed of 2000 MHz. It also makes use of a 256-bit memory bus, and uses a 7 nm design. It is comprised of 5120 SPUs, 320 TAUs, and 128 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon RX 6900 XT, in theory, should 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 quite a bit (more or less 3006%) more effective at 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 high levels of AA is important to you, then the Radeon RX 6900 XT is the winner, 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 max amount of information (counted in MB per second) that can be transferred over the external memory interface in one second. It is worked out by multiplying the bus width by the speed of its memory. If the card has DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better 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 number of texture map elements (texels) that can be processed in one second. This is calculated 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 per second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - aka 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 potential to get to the max fill rate.