Radeon R9 280X vs Radeon RX 6600 XT

Intro

Compare that to the Radeon RX 6600 XT, which comes with clock speeds of 1968 MHz on the GPU, and 2000 MHz on the 8192 MB of GDDR6 RAM. It features 2048 SPUs as well as 128 Texture Address Units and 64 ROPs.

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

As far as performance goes, the Radeon R9 280X should in theory be a bit superior to the Radeon RX 6600 XT overall. (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 a lot (about 132%) better 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 will be quite a bit (about 363%) better at AA than the Radeon R9 280X, and also able to handle higher screen resolutions better. (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 largest amount of data (counted in megabytes per second) that can be transferred past the external memory interface in a second. The number is calculated by multiplying the card's interface width by its memory clock speed. In the case of DDR type RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This number is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The higher the texel rate, the better the card will be at 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 could possibly write to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant 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.