Radeon RX 5500 vs Radeon RX 6600

Intro

Compare those specifications to the Radeon RX 6600, which features a core clock speed of 1626 MHz and a GDDR6 memory frequency of 1750 MHz. It also features a 128-bit memory bus, and makes use of a 7 nm design. It is comprised of 1792 SPUs, 112 TAUs, and 64 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6600		132 Watts
Radeon RX 5500		150 Watts
	Difference: 18 Watts (14%)

Memory Bandwidth

Both cards have exactly the same memory bandwidth, so theoretically they should perform exactly the same. (explain)

Texel Rate

The Radeon RX 6600 will be a lot (more or less 24%) better at anisotropic filtering than the Radeon RX 5500. (explain)

Radeon RX 6600		182112 Mtexels/sec
Radeon RX 5500		146960 Mtexels/sec
	Difference: 35152 (24%)

Pixel Rate

The Radeon RX 6600 is quite a bit (approximately 95%) faster with regards to AA than the Radeon RX 5500, and also should be able to handle higher screen resolutions better. (explain)

Radeon RX 6600		104064 Mpixels/sec
Radeon RX 5500		53440 Mpixels/sec
	Difference: 50624 (95%)

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 (counted in MB per second) that can be transported over the external memory interface in a second. It is calculated by multiplying the card's bus width by its memory clock speed. If it uses DDR type memory, it must 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 AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This figure is calculated by multiplying the total number of texture units by the core clock speed of the chip. The better the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly write to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.