Radeon R9 380X vs Radeon RX 6500 XT

Intro

Compare those specifications to the Radeon RX 6500 XT, which has a clock speed of 2200 MHz and a GDDR6 memory frequency of 2250 MHz. It also uses a 64-bit memory bus, and makes use of a 6 nm design. It is comprised of 1024 SPUs, 64 TAUs, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6500 XT		107 Watts
Radeon R9 380X		190 Watts
	Difference: 83 Watts (78%)

Memory Bandwidth

As far as performance goes, the Radeon R9 380X should in theory be a lot superior to the Radeon RX 6500 XT overall. (explain)

Radeon R9 380X		182400 MB/sec
Radeon RX 6500 XT		147456 MB/sec
	Difference: 34944 (24%)

Texel Rate

The Radeon RX 6500 XT will be a little bit (more or less 13%) more effective at texture filtering than the Radeon R9 380X. (explain)

Radeon RX 6500 XT		140800 Mtexels/sec
Radeon R9 380X		124160 Mtexels/sec
	Difference: 16640 (13%)

Pixel Rate

The Radeon RX 6500 XT will be much (more or less 127%) faster with regards to anti-aliasing than the Radeon R9 380X, and also will be able to handle higher screen resolutions better. (explain)

Radeon RX 6500 XT		70400 Mpixels/sec
Radeon R9 380X		31040 Mpixels/sec
	Difference: 39360 (127%)

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 information (counted in megabytes per second) that can be moved across the external memory interface in a second. It is calculated by multiplying the interface width by its memory clock speed. In the case of DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, 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 number of texture map elements (texels) that can be processed per second. This number is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The better this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

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