Radeon R9 280 vs Radeon RX 6600

Intro

Compare that to the Radeon RX 6600, which makes use of a 7 nm design. AMD has clocked the core frequency at 1626 MHz. The GDDR6 RAM works at a frequency of 1750 MHz on this card. It features 1792 SPUs along with 112 Texture Address Units and 64 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6600		132 Watts
Radeon R9 280		250 Watts
	Difference: 118 Watts (89%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 280 should be 5% quicker than the Radeon RX 6600 overall, due to its higher data rate. (explain)

Radeon R9 280		240000 MB/sec
Radeon RX 6600		229376 MB/sec
	Difference: 10624 (5%)

Texel Rate

The Radeon RX 6600 will be quite a bit (approximately 74%) more effective at AF than the Radeon R9 280. (explain)

Radeon RX 6600		182112 Mtexels/sec
Radeon R9 280		104496 Mtexels/sec
	Difference: 77616 (74%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon RX 6600 is the winner, by a large margin. (explain)

Radeon RX 6600		104064 Mpixels/sec
Radeon R9 280		29856 Mpixels/sec
	Difference: 74208 (249%)

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 maximum amount of data (measured in MB per second) that can be transferred past the external memory interface in one second. It's worked out by multiplying the card's bus width by the speed of its memory. If it uses DDR memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better 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 can be processed per second. This number is calculated by multiplying the total texture units by the core clock speed of the chip. The higher this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called 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 - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.