Radeon R9 380X vs Radeon RX 6600 XT

Intro

Compare all of that to the Radeon RX 6600 XT, which has core 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

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6600 XT		160 Watts
Radeon R9 380X		190 Watts
	Difference: 30 Watts (19%)

Memory Bandwidth

Performance-wise, the Radeon RX 6600 XT should in theory be much better than the Radeon R9 380X overall. (explain)

Radeon RX 6600 XT		262144 MB/sec
Radeon R9 380X		182400 MB/sec
	Difference: 79744 (44%)

Texel Rate

The Radeon RX 6600 XT is quite a bit (approximately 103%) faster with regards to anisotropic filtering than the Radeon R9 380X. (explain)

Radeon RX 6600 XT		251904 Mtexels/sec
Radeon R9 380X		124160 Mtexels/sec
	Difference: 127744 (103%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon RX 6600 XT is the winner, by a large margin. (explain)

Radeon RX 6600 XT		125952 Mpixels/sec
Radeon R9 380X		31040 Mpixels/sec
	Difference: 94912 (306%)

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 maximum amount of information (measured in MB per second) that can be moved across the external memory interface in a second. The number is worked out by multiplying the bus width by the speed of its memory. If it uses DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This number is worked out 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 video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.