The Intel® Core i5-3210m processor’s normal clock speed is 2.5 GHz. The maximum Turbo boost frequency is 3.0GHz.
Please note that Intel® Turbo boost is engaged automatically depending on processor’s load, voltage, power and temperature. Therefore, at a particular moment the processor may reach 3.0 Ghz depending on those variables. Usually this feature comes enabled in BIOS by default.
Since you have a branded laptop, I recommend you to contact them in order to verify if Intel Turbo Boost Technology is or not enable.
This feature comes enable by default in our motherboards, but in your case, it may be disable by your computer manufacture.
You can also try installing the Processor Diagnostics Tool. This tool will verify the functionality of your processor. This diagnostic checks for brand identification, verifies the processor operating frequency, tests specific processor features and performs a stress test on the processor.
There is a third party software that you may also want to try named CPU-Z.