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Radeon RX 470 4GB vs Radeon RX 6600

Intro

The Radeon RX 470 4GB features a GPU core clock speed of 926 MHz, and the 4096 MB of GDDR5 RAM runs at 1650 MHz through a 256-bit bus. It also is comprised of 2048 Stream Processors, 128 TAUs, and 32 ROPs.

Compare those specs to the Radeon RX 6600, which uses a 7 nm design. AMD has set the core frequency at 1626 MHz. The GDDR6 memory is set to run at a speed of 1750 MHz on this particular model. 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 470 4GB		120 Watts
Radeon RX 6600		132 Watts
	Difference: 12 Watts (10%)

Memory Bandwidth

Theoretically speaking, the Radeon RX 6600 should be 9% faster than the Radeon RX 470 4GB in general, due to its higher data rate. (explain)

Radeon RX 6600		229376 MB/sec
Radeon RX 470 4GB		211200 MB/sec
	Difference: 18176 (9%)

Texel Rate

The Radeon RX 6600 should be quite a bit (about 54%) faster with regards to AF than the Radeon RX 470 4GB. (explain)

Radeon RX 6600		182112 Mtexels/sec
Radeon RX 470 4GB		118528 Mtexels/sec
	Difference: 63584 (54%)

Pixel Rate

The Radeon RX 6600 is much (approximately 251%) faster with regards to FSAA than the Radeon RX 470 4GB, and will be capable of handling higher resolutions without slowing down too much. (explain)

Radeon RX 6600		104064 Mpixels/sec
Radeon RX 470 4GB		29632 Mpixels/sec
	Difference: 74432 (251%)

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 470 4GB

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Radeon RX 6600

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Specifications

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Model	Radeon RX 470 4GB	Radeon RX 6600
Manufacturer	AMD	AMD
Year	August 2016	October 2021
Code Name	Polaris 10	Navi 23
Memory	4096 MB	8192 MB
Core Speed	926 MHz	1626 MHz
Memory Speed	6600 MHz	3500 GB/s
Power (Max TDP)	120 watts	132 watts
Bandwidth	211200 MB/sec	229376 MB/sec
Texel Rate	118528 Mtexels/sec	182112 Mtexels/sec
Pixel Rate	29632 Mpixels/sec	104064 Mpixels/sec
Unified Shaders	2048	1792
Texture Mapping Units	128	112
Render Output Units	32	64
Bus Type	GDDR5	GDDR6
Bus Width	256-bit	128-bit
Fab Process	14 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: Memory bandwidth is the max amount of data (measured in megabytes per second) that can be moved past the external memory interface in one second. It is calculated by multiplying the interface width by its memory clock speed. If it uses DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied per second. This is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The better this number, the better the video card will be at handling 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 per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. 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 output rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.

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