Radeon R9 380 2G vs Radeon RX 6650 XT

Intro

Compare those specifications to the Radeon RX 6650 XT, which has a clock speed of 2055 MHz and a GDDR6 memory frequency of 2190 MHz. It also features a 128-bit memory bus, and makes use of a 7 nm design. It is made up of 2048 SPUs, 128 Texture Address Units, and 64 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6650 XT		176 Watts
Radeon R9 380 2G		190 Watts
	Difference: 14 Watts (8%)

Memory Bandwidth

In theory, the Radeon RX 6650 XT will be 57% faster than the Radeon R9 380 2G overall, because of its greater data rate. (explain)

Radeon RX 6650 XT		287072 MB/sec
Radeon R9 380 2G		182400 MB/sec
	Difference: 104672 (57%)

Texel Rate

The Radeon RX 6650 XT is quite a bit (more or less 142%) faster with regards to AF than the Radeon R9 380 2G. (explain)

Radeon RX 6650 XT		263040 Mtexels/sec
Radeon R9 380 2G		108640 Mtexels/sec
	Difference: 154400 (142%)

Pixel Rate

The Radeon RX 6650 XT should be a lot (approximately 324%) faster with regards to anti-aliasing than the Radeon R9 380 2G, and should be capable of handling higher screen resolutions better. (explain)

Radeon RX 6650 XT		131520 Mpixels/sec
Radeon R9 380 2G		31040 Mpixels/sec
	Difference: 100480 (324%)

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 (measured in megabytes per second) that can be moved across the external memory interface in one second. It is calculated by multiplying the bus width by the speed of its memory. In the case of DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly record to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.