Radeon HD 7850 vs Radeon RX 6600 XT

Intro

Compare that to the Radeon RX 6600 XT, which comes with GPU core speed of 1968 MHz, and 8192 MB of GDDR6 RAM running at 2000 MHz through a 128-bit bus. It also is made up of 2048 Stream Processors, 128 Texture Address Units, and 64 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7850		130 Watts
Radeon RX 6600 XT		160 Watts
	Difference: 30 Watts (23%)

Memory Bandwidth

As far as performance goes, the Radeon RX 6600 XT should theoretically be much better than the Radeon HD 7850 in general. (explain)

Radeon RX 6600 XT		262144 MB/sec
Radeon HD 7850		153600 MB/sec
	Difference: 108544 (71%)

Texel Rate

The Radeon RX 6600 XT will be much (about 358%) more effective at anisotropic filtering than the Radeon HD 7850. (explain)

Radeon RX 6600 XT		251904 Mtexels/sec
Radeon HD 7850		55040 Mtexels/sec
	Difference: 196864 (358%)

Pixel Rate

The Radeon RX 6600 XT should be a lot (approximately 358%) faster with regards to AA than the Radeon HD 7850, and should be able to handle higher screen resolutions without slowing down too much. (explain)

Radeon RX 6600 XT		125952 Mpixels/sec
Radeon HD 7850		27520 Mpixels/sec
	Difference: 98432 (358%)

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 information (counted in MB per second) that can be transferred past 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 RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This number is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The higher the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.