AMD's mobile flagships clash in benchmarks posted online.
as the article points out, different markets. 4800U is for thin n light, so its 1.8ghz clock speed is slower by about 30%...which explains the 30% performance lead the 4900HS with its 3.0ghz base clock. GPU performance metrics aren't quite as steep...about a 15% difference.
8c / 16t notebooks guys...other than the TDP, desktops are going to have fewer reasons to exist.