Radeon RX 5500 vs Radeon RX 6600

Intro

Compare all of that to the Radeon RX 6600, which features a clock speed of 1626 MHz and a GDDR6 memory speed of 1750 MHz. It also makes use of a 128-bit memory bus, and makes use of a 7 nm design. It is made up of 1792 SPUs, 112 Texture Address Units, and 64 ROPs.

Display Graphs

Hide Graphs

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 the exact same memory bandwidth, so in theory they should have the same performance. (explain)

Texel Rate

The Radeon RX 6600 will be much (approximately 24%) better at AF than the Radeon RX 5500. (explain)

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

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon RX 6600 is superior to the Radeon RX 5500, by a large margin. (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: Bandwidth is the max amount of data (in units of megabytes per second) that can be moved across the external memory interface in a second. It's calculated by multiplying the bus width by its memory speed. If it uses DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the better 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 processed per second. This is calculated by multiplying the total texture units of the card by the core speed of the chip. The higher the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum number 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 number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output 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 maximum fill rate.