You may need to set this to High Performance to get Turbo working. In Windows, check which power option you are using, in Control Panel, and Power Options. But this may not be the only reason it is not working. Apparently, some (if not most/all) notebook manufactures do not enable this option, or don't allow it to be enabled, particularly on notebooks, to save energy (battery) and lower heat generation. Hopefully you'll at least see this and have an answer. Notice the last green spot on the page, Intel Turbo Boost Technology, and that it is supported and enabled on my PC. Scroll down and look for Enhanced Features, which will look something like this:
In the main window, if you double click on Central Processors and then i7-720QM, you'll see a huge list of processor info.
First, is Turbo Boost enabled on your processor? You may be able to check that in the BIOS of your notebook, have you ever been in the BIOS? Another way to check is to download, install and run this free program: If Turbo Boost Monitor shows a maximum of 1.60Ghz, that can be caused by a few things. The processor utility reads the actual processor frequency once for display during the test, and most likely caught it when it was lowered by the power saving options, by chance. When EIST is enabled, the processor will (should) vary it's frequency depending upon it's load. The reported speed you saw of 0.93GHz is likely the result of power savings options being activated, those being Enhanced Intel Speed Step (EIST) and C-States, used with Mobile as well as Desktop processors. It's standard speed is 1.6GHz, with max Turbo speed of 2.8GHz. The specs for the i7-720QM processor can be seen here: