Is there a way to run an intel CPU at max turbo speed without disabling any cores?

[dssdghthd]

Currently the only way my i5-2500 goes up to 3.7 GHz is by disabling 3 cores in BIOS. Otherwise it will only go up to 3.4 GHz even in single threaded applications, because the workload is always distributed among all the cores so they all stay active.
Is there maybe some kind of software that forces the CPU to run at 3.7 GHZ turbo speed regardless of # active cores?

 

[13thmonkey]

some motherboards may allow this in bios, i.e. setting the multiplier even though it is not an unlocked chip but only up to max turbo freq

 

[dssdghthd]

Mine doesn't unfortunately.