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Radeon RX 590 vs Radeon RX 6600

Intro

The Radeon RX 590 has a core clock frequency of 1469 MHz and a GDDR5 memory frequency of 2000 MHz. It also uses a 256-bit bus, and makes use of a 12 nm design. It is made up of 2304 SPUs, 144 TAUs, and 32 ROPs.

Compare that to the Radeon RX 6600, which uses a 7 nm design. AMD has clocked the core frequency at 1626 MHz. The GDDR6 RAM works at a speed of 1750 MHz on this specific card. It features 1792 SPUs as well as 112 TAUs and 64 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6600		132 Watts
Radeon RX 590		175 Watts
	Difference: 43 Watts (33%)

Memory Bandwidth

As far as performance goes, the Radeon RX 590 should in theory be a small bit superior to the Radeon RX 6600 overall. (explain)

Radeon RX 590		262144 MB/sec
Radeon RX 6600		229376 MB/sec
	Difference: 32768 (14%)

Texel Rate

The Radeon RX 590 should be a bit (more or less 16%) better at anisotropic filtering than the Radeon RX 6600. (explain)

Radeon RX 590		211536 Mtexels/sec
Radeon RX 6600		182112 Mtexels/sec
	Difference: 29424 (16%)

Pixel Rate

The Radeon RX 6600 should be a lot (approximately 121%) more effective at anti-aliasing than the Radeon RX 590, and also capable of handling higher screen resolutions without slowing down too much. (explain)

Radeon RX 6600		104064 Mpixels/sec
Radeon RX 590		47008 Mpixels/sec
	Difference: 57056 (121%)

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

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Radeon RX 590

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Radeon RX 6600

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Specifications

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Model	Radeon RX 590	Radeon RX 6600
Manufacturer	AMD	AMD
Year	November 2018	October 2021
Code Name	Polaris 30	Navi 23
Memory	8192 MB	8192 MB
Core Speed	1469 MHz	1626 MHz
Memory Speed	8000 MHz	3500 GB/s
Power (Max TDP)	175 watts	132 watts
Bandwidth	262144 MB/sec	229376 MB/sec
Texel Rate	211536 Mtexels/sec	182112 Mtexels/sec
Pixel Rate	47008 Mpixels/sec	104064 Mpixels/sec
Unified Shaders	2304	1792
Texture Mapping Units	144	112
Render Output Units	32	64
Bus Type	GDDR5	GDDR6
Bus Width	256-bit	128-bit
Fab Process	12 nm	7 nm
Transistors	5700 million	11060 million
Bus	PCIe 3.0 x16	PCIe 4.0 x16
DirectX Version	DirectX 12.0	DirectX 12
OpenGL Version	OpenGL 4.5	OpenGL 4.6

Memory Bandwidth: Bandwidth is the maximum amount of data (in units of megabytes per second) that can be transferred past the external memory interface in a second. It is worked out by multiplying the interface width by its memory speed. If the card has DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This number 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 handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.

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