Radeon R9 380 4G vs Radeon RX 6650 XT

Intro

Compare that to the Radeon RX 6650 XT, which has clock speeds of 2055 MHz on the GPU, and 2190 MHz on the 8192 MB of GDDR6 RAM. It features 2048 SPUs along with 128 Texture Address Units and 64 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6650 XT		176 Watts
Radeon R9 380 4G		190 Watts
	Difference: 14 Watts (8%)

Memory Bandwidth

In theory, the Radeon RX 6650 XT should be 57% faster than the Radeon R9 380 4G overall, because of its greater bandwidth. (explain)

Radeon RX 6650 XT		287072 MB/sec
Radeon R9 380 4G		182400 MB/sec
	Difference: 104672 (57%)

Texel Rate

The Radeon RX 6650 XT will be a lot (approximately 142%) better at AF than the Radeon R9 380 4G. (explain)

Radeon RX 6650 XT		263040 Mtexels/sec
Radeon R9 380 4G		108640 Mtexels/sec
	Difference: 154400 (142%)

Pixel Rate

The Radeon RX 6650 XT is a lot (approximately 324%) better at AA than the Radeon R9 380 4G, and also should be capable of handling higher screen resolutions better. (explain)

Radeon RX 6650 XT		131520 Mpixels/sec
Radeon R9 380 4G		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 max amount of data (in units of MB per second) that can be moved over the external memory interface in a second. It is worked out by multiplying the bus width by the speed of its memory. If it uses DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This number is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The higher this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum number 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 number of ROPs by the the core clock speed. 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 output rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.