Not a whole lot of details are available, except that the Radeo RX 5300XT has 4GB GDDR5 memory. Furthermore, these OEM PCs also use the yet-to-be-released B550 chipset:
Interestingly the HP pre-built systems also feature yet unreleased B550 motherboards. This mid-range chipset was not released with high-end Ryzen 3000 AM4 lineup. In fact, we expect more entry-level/mid-range Ryzen SKUs to be added to the lineup soon (such as Ryzen 5 3500X). The appearance of B550 motherboard at Alternate could be an indicator of that this might happen next month.