Radeon HD 7850 vs Radeon RX 6600

Intro

Compare those specs to the Radeon RX 6600, which uses a 7 nm design. AMD has set the core speed at 1626 MHz. The GDDR6 memory is set to run at a frequency of 1750 MHz on this model. It features 1792 SPUs along with 112 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		132 Watts
	Difference: 2 Watts (2%)

Memory Bandwidth

In theory, the Radeon RX 6600 should perform much faster than the Radeon HD 7850 overall. (explain)

Radeon RX 6600		229376 MB/sec
Radeon HD 7850		153600 MB/sec
	Difference: 75776 (49%)

Texel Rate

The Radeon RX 6600 is a lot (about 231%) faster with regards to texture filtering than the Radeon HD 7850. (explain)

Radeon RX 6600		182112 Mtexels/sec
Radeon HD 7850		55040 Mtexels/sec
	Difference: 127072 (231%)

Pixel Rate

The Radeon RX 6600 is a lot (about 278%) better at FSAA than the Radeon HD 7850, and will be able to handle higher screen resolutions more effectively. (explain)

Radeon RX 6600		104064 Mpixels/sec
Radeon HD 7850		27520 Mpixels/sec
	Difference: 76544 (278%)

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 largest amount of data (in units of MB per second) that can be transferred over the external memory interface within a second. It's calculated by multiplying the card's bus width by its memory clock speed. In the case of DDR RAM, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high 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 texture units of the card by the core speed of the chip. The higher this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Render Output Units 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, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.