If I'm reading your attachment correctly this VM has a reservation of 9.57Ghz but is NOT limiting the CPU cycles it can consume therefore you will be able to utilize all the CPU available to it, i.e. 10.52 GHz
One other thing to note: depending on your vSphere licensing you may not be able to add additonal vCPU to this VM. ESX(i) 4 is limited to 4 with Enterprise licensing - 8 with Enterprise Plus.
Kind regards.