Radeon R9 280 vs Radeon RX 6600 XT

Intro

Compare those specifications to the Radeon RX 6600 XT, which comes with a core clock frequency of 1968 MHz and a GDDR6 memory frequency of 2000 MHz. It also uses a 128-bit bus, and uses a 7 nm design. It features 2048 SPUs, 128 TAUs, and 64 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

Theoretically, the Radeon RX 6600 XT should be a bit faster than the Radeon R9 280 overall. (explain)

Radeon RX 6600 XT		262144 MB/sec
Radeon R9 280		240000 MB/sec
	Difference: 22144 (9%)

Texel Rate

The Radeon RX 6600 XT should be quite a bit (more or less 141%) better at anisotropic filtering than the Radeon R9 280. (explain)

Radeon RX 6600 XT		251904 Mtexels/sec
Radeon R9 280		104496 Mtexels/sec
	Difference: 147408 (141%)

Pixel Rate

The Radeon RX 6600 XT will be a lot (more or less 322%) faster with regards to FSAA than the Radeon R9 280, and should be able to handle higher resolutions more effectively. (explain)

Radeon RX 6600 XT		125952 Mpixels/sec
Radeon R9 280		29856 Mpixels/sec
	Difference: 96096 (322%)

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 data (in units of megabytes per second) that can be moved over the external memory interface in one second. It's worked out by multiplying the interface width by its memory clock speed. In the case of DDR memory, 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 anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This figure is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.