Radeon R9 M275X vs Radeon RX 6900 XT

Intro

Compare those specs to the Radeon RX 6900 XT, which comes with a core clock frequency of 1825 MHz and a GDDR6 memory speed of 2000 MHz. It also makes use of a 256-bit bus, and makes use of a 7 nm design. It features 5120 SPUs, 320 Texture Address Units, and 128 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M275X		50 Watts
Radeon RX 6900 XT		300 Watts
	Difference: 250 Watts (500%)

Memory Bandwidth

Performance-wise, the Radeon RX 6900 XT should in theory be quite a bit superior to the Radeon R9 M275X in general. (explain)

Radeon RX 6900 XT		524288 MB/sec
Radeon R9 M275X		72000 MB/sec
	Difference: 452288 (628%)

Texel Rate

The Radeon RX 6900 XT will be quite a bit (more or less 1522%) faster with regards to texture filtering than the Radeon R9 M275X. (explain)

Radeon RX 6900 XT		584000 Mtexels/sec
Radeon R9 M275X		36000 Mtexels/sec
	Difference: 548000 (1522%)

Pixel Rate

If using a high resolution is important to you, then the Radeon RX 6900 XT is superior to the Radeon R9 M275X, by far. (explain)

Radeon RX 6900 XT		233600 Mpixels/sec
Radeon R9 M275X		14400 Mpixels/sec
	Difference: 219200 (1522%)

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 (in units of MB per second) that can be transported across the external memory interface in a second. It is calculated by multiplying the interface width by its memory clock speed. If it uses DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed in one second. This number is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher the texel rate, 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 a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.