Based on reviews of OEM models of the Radeon RX 5500 series, this card will offer performance similar to a Radeon RX 580 but with higher energy efficiency.
The Radeon RX 5600 XT is expected to follow in January, this model also has a 192-bit memory bus and will reportedly get 6GB GDDR6 memory.
The information on Radeon RX 5600 series is limited, but we do know it has 6GB GDDR6 memory (most likely paired with 192-bit bus). It is, however, too early to speculate on the GPU variant that this card might use. Via: VideoCardz