AMD includes the Ryzen 9 4900H and Ryzen 9 4900HS in the Renoir Ryzen 4000 APU lineup: faster base clocks than the Core i9-9880H at 45W TDP - NotebookCheck.net News
AMD Ryzen 9 4900U Mobile Processor Leaked by Lenovo | Hardware Times
3DMark confirms 4.3 GHz boost clock and SMT for AMD Ryzen 9 4900U - NotebookCheck.net News