Cydras

Hi, since 3 weeks i have a Dell Latitude 7420 with i7 1185G7 CPU. Now Dell describes the CPU on his Web with a 3GHz to 4,8GHz Clock. I know also, with 28W TDP Configuration, the CPU base clock is 3GHz. But my base clock is 1,8GHz. CPUz and the Task Manager show my CPU as: 11th Gen Intel Core i7-1185G7 @ 3GHz. But base clock is 1,8GHz and not 3GHz. In the BIOS, i already set the "Ultimate Performance" Mode. When i run Becnhmarks, i see with HWMonitor that only 15W Package Power are used... Sorry for no pictures, but uploading a file fails here at the moment. So i think Dell has misdescribed the CPU and it runs only with 15W TDP... Is there any possibility to unlock 28W TDP?