Radeon R9 M290X vs Radeon RX 6900 XT

Intro

Compare that to the Radeon RX 6900 XT, which makes use of a 7 nm design. AMD has set the core frequency at 1825 MHz. The GDDR6 memory runs at a speed of 2000 MHz on this specific card. It features 5120 SPUs along with 320 TAUs and 128 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M290X		100 Watts
Radeon RX 6900 XT		300 Watts
	Difference: 200 Watts (200%)

Memory Bandwidth

Theoretically speaking, the Radeon RX 6900 XT will be 241% faster than the Radeon R9 M290X in general, due to its higher data rate. (explain)

Radeon RX 6900 XT		524288 MB/sec
Radeon R9 M290X		153600 MB/sec
	Difference: 370688 (241%)

Texel Rate

The Radeon RX 6900 XT is quite a bit (approximately 759%) faster with regards to AF than the Radeon R9 M290X. (explain)

Radeon RX 6900 XT		584000 Mtexels/sec
Radeon R9 M290X		68000 Mtexels/sec
	Difference: 516000 (759%)

Pixel Rate

The Radeon RX 6900 XT is quite a bit (more or less 759%) better at full screen anti-aliasing than the Radeon R9 M290X, and also should be capable of handling higher screen resolutions while still performing well. (explain)

Radeon RX 6900 XT		233600 Mpixels/sec
Radeon R9 M290X		27200 Mpixels/sec
	Difference: 206400 (759%)

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 data (counted in MB per second) that can be transported past the external memory interface in a second. It is calculated by multiplying the card's interface width by its memory speed. In the case of DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that 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 amount of colour ROPs by the the core 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 is also dependant on many 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.