Radeon RX 6600 XT vs Radeon RX 6650 XT

Intro

Compare those specifications to the Radeon RX 6650 XT, which comes with a GPU core clock speed of 2055 MHz, and 8192 MB of GDDR6 memory running at 2190 MHz through a 128-bit bus. It also is made up of 2048 Stream Processors, 128 Texture Address Units, and 64 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6600 XT		160 Watts
Radeon RX 6650 XT		176 Watts
	Difference: 16 Watts (10%)

Memory Bandwidth

Theoretically speaking, the Radeon RX 6650 XT should be 10% quicker than the Radeon RX 6600 XT in general, due to its greater bandwidth. (explain)

Radeon RX 6650 XT		287072 MB/sec
Radeon RX 6600 XT		262144 MB/sec
	Difference: 24928 (10%)

Texel Rate

The Radeon RX 6650 XT should be a bit (approximately 4%) better at AF than the Radeon RX 6600 XT. (explain)

Radeon RX 6650 XT		263040 Mtexels/sec
Radeon RX 6600 XT		251904 Mtexels/sec
	Difference: 11136 (4%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon RX 6650 XT is superior to the Radeon RX 6600 XT, but it probably won't make a huge difference. (explain)

Radeon RX 6650 XT		131520 Mpixels/sec
Radeon RX 6600 XT		125952 Mpixels/sec
	Difference: 5568 (4%)

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 information (measured in megabytes per second) that can be transferred past the external memory interface within a second. It's calculated by multiplying the interface width by the speed of its memory. In the case of DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied in one second. This figure is worked out by multiplying the total amount 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 a second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of ROPs 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 fill rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.