Radeon R9 280X vs Radeon RX 6600 XT

Intro

Compare that to the Radeon RX 6600 XT, which features clock speeds of 1968 MHz on the GPU, and 2000 MHz on the 8192 MB of GDDR6 RAM. It features 2048 SPUs along with 128 TAUs and 64 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6600 XT		160 Watts
Radeon R9 280X		250 Watts
	Difference: 90 Watts (56%)

Memory Bandwidth

Theoretically, the Radeon R9 280X should be just a bit faster than the Radeon RX 6600 XT in general. (explain)

Radeon R9 280X		288000 MB/sec
Radeon RX 6600 XT		262144 MB/sec
	Difference: 25856 (10%)

Texel Rate

The Radeon RX 6600 XT is much (more or less 132%) more effective at texture filtering than the Radeon R9 280X. (explain)

Radeon RX 6600 XT		251904 Mtexels/sec
Radeon R9 280X		108800 Mtexels/sec
	Difference: 143104 (132%)

Pixel Rate

The Radeon RX 6600 XT should be much (about 363%) more effective at anti-aliasing than the Radeon R9 280X, and capable of handling higher resolutions while still performing well. (explain)

Radeon RX 6600 XT		125952 Mpixels/sec
Radeon R9 280X		27200 Mpixels/sec
	Difference: 98752 (363%)

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: Memory bandwidth is the max amount of information (in units of MB per second) that can be moved over the external memory interface within a second. It is calculated by multiplying the interface width by its memory speed. If the card has DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly record to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on 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 ability to reach the max fill rate.