Radeon RX 580 vs Radeon RX 6650 XT

Intro

Compare those specifications to the Radeon RX 6650 XT, which makes use of a 7 nm design. AMD has clocked the core frequency at 2055 MHz. The GDDR6 RAM is set to run at a speed of 2190 MHz on this model. It features 2048 SPUs along with 128 Texture Address Units and 64 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6650 XT		176 Watts
Radeon RX 580		185 Watts
	Difference: 9 Watts (5%)

Memory Bandwidth

As far as performance goes, the Radeon RX 6650 XT should in theory be a bit superior to the Radeon RX 580 overall. (explain)

Radeon RX 6650 XT		287072 MB/sec
Radeon RX 580		262144 MB/sec
	Difference: 24928 (10%)

Texel Rate

The Radeon RX 6650 XT will be much (approximately 45%) better at anisotropic filtering than the Radeon RX 580. (explain)

Radeon RX 6650 XT		263040 Mtexels/sec
Radeon RX 580		181008 Mtexels/sec
	Difference: 82032 (45%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon RX 6650 XT is superior to the Radeon RX 580, and very much so. (explain)

Radeon RX 6650 XT		131520 Mpixels/sec
Radeon RX 580		40224 Mpixels/sec
	Difference: 91296 (227%)

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 (in units of megabytes per second) that can be transferred over the external memory interface in a second. The number is worked out by multiplying the card's bus width by its memory clock speed. If the card has DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied per second. This figure is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The better the texel rate, the better the 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 maximum amount of pixels that the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units 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 output rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.