Radeon HD 3690/3830 vs Radeon RX 6900 XT

Intro

Compare all that to the Radeon RX 6900 XT, which features clock speeds of 1825 MHz on the GPU, and 2000 MHz on the 16384 MB of GDDR6 RAM. It features 5120 SPUs as well as 320 TAUs and 128 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 3690/3830		75 Watts
Radeon RX 6900 XT		300 Watts
	Difference: 225 Watts (300%)

Memory Bandwidth

Theoretically, the Radeon RX 6900 XT should be a lot faster than the Radeon HD 3690/3830 in general. (explain)

Radeon RX 6900 XT		524288 MB/sec
Radeon HD 3690/3830		26496 MB/sec
	Difference: 497792 (1879%)

Texel Rate

The Radeon RX 6900 XT will be quite a bit (approximately 5364%) faster with regards to texture filtering than the Radeon HD 3690/3830. (explain)

Radeon RX 6900 XT		584000 Mtexels/sec
Radeon HD 3690/3830		10688 Mtexels/sec
	Difference: 573312 (5364%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon RX 6900 XT is the winner, by a large margin. (explain)

Radeon RX 6900 XT		233600 Mpixels/sec
Radeon HD 3690/3830		10688 Mpixels/sec
	Difference: 222912 (2086%)

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: Memory bandwidth is the max amount of data (in units of megabytes per second) that can be transferred over the external memory interface in one second. It's calculated by multiplying the bus width by its memory clock speed. In the case of DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied per second. This is calculated by multiplying the total texture units of the card by the core 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 processed per second.

Pixel Rate: Pixel rate is the maximum number of pixels the video 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 Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.