Radeon R9 280X vs Radeon RX 6600

Intro

Compare that to the Radeon RX 6600, which features a clock frequency of 1626 MHz and a GDDR6 memory speed of 1750 MHz. It also features a 128-bit memory bus, and uses 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 R9 280X		250 Watts
	Difference: 118 Watts (89%)

Memory Bandwidth

In theory, the Radeon R9 280X will be 26% quicker than the Radeon RX 6600 overall, because of its higher data rate. (explain)

Radeon R9 280X		288000 MB/sec
Radeon RX 6600		229376 MB/sec
	Difference: 58624 (26%)

Texel Rate

The Radeon RX 6600 will be quite a bit (approximately 67%) faster with regards to anisotropic filtering than the Radeon R9 280X. (explain)

Radeon RX 6600		182112 Mtexels/sec
Radeon R9 280X		108800 Mtexels/sec
	Difference: 73312 (67%)

Pixel Rate

If using a high screen 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 280X		27200 Mpixels/sec
	Difference: 76864 (283%)

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 (counted in MB per second) that can be moved over the external memory interface in a second. It's worked out by multiplying the bus width by the speed of its memory. If it uses DDR RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly write to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.