Radeon R9 380 2G vs Radeon RX 6500 XT

Intro

Compare those specifications to the Radeon RX 6500 XT, which makes use of a 6 nm design. AMD has set the core frequency at 2200 MHz. The GDDR6 memory is set to run at a frequency of 2250 MHz on this particular model. It features 1024 SPUs as well as 64 Texture Address Units and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6500 XT		107 Watts
Radeon R9 380 2G		190 Watts
	Difference: 83 Watts (78%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 380 2G will be 24% quicker than the Radeon RX 6500 XT in general, because of its higher data rate. (explain)

Radeon R9 380 2G		182400 MB/sec
Radeon RX 6500 XT		147456 MB/sec
	Difference: 34944 (24%)

Texel Rate

The Radeon RX 6500 XT is quite a bit (more or less 30%) faster with regards to anisotropic filtering than the Radeon R9 380 2G. (explain)

Radeon RX 6500 XT		140800 Mtexels/sec
Radeon R9 380 2G		108640 Mtexels/sec
	Difference: 32160 (30%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon RX 6500 XT is the winner, by far. (explain)

Radeon RX 6500 XT		70400 Mpixels/sec
Radeon R9 380 2G		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 data (in units of megabytes per second) that can be transferred across the external memory interface in a second. It's calculated by multiplying the card's interface width by its memory clock speed. If it uses DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR 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 worked out by multiplying the total number of texture units by the core clock speed of the chip. The higher the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

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