This message was posted on behalf of Intel Corporation
Hi Mare92: Thank you very much for contacting the Intel® Processors communities. We will do our best to provide the information you are looking for.
In regard to your inquiry, that is correct, the Intel® processor M3-6Y30 has a base frequency of 900MHz and is capable of reaching 2.20GHz when using the Turbo Boost feature:
Additionally, remember that the manufacturer of the computer, in this case ASUS, has the option to customized all the BIOS settings, features and programs on the computer, so what we suggest in this case is to get in contact directly with them just to confirm if the is a limitation or a feature that makes the processor to reach 1.51GHz as the higher processor base frequency:
Any further questions, please let me know.