Recently I noticed the Intel Turbo Boost doesn't reach its full extent, 3.4 GHz with i5 2400. Instead it stays on the lowest level, 1.6, all the time. To test CPU speed, I opened the MSI control center to monitor each core while running OCCT CPU test, and all the cores maintained 3.2 this time. but not 3.4 in any core. Then 3D Mark 11 result reported my CPU ran @1600MHz, and the Physics score was lower than before, from 6100 to 5900. I checked the BIOS, and everything is as before. I didn't install any new driver except the new GeForce WHQL one. How can I resolve this?
CPU: i5 2400
MB: MSI H67
Memory: Corsair DDR3 1333
GPU: EVGA GTX 560 Ti 448 Classified
PSU: Antec HCG-620
CPU: i5 2400
MB: MSI H67
Memory: Corsair DDR3 1333
GPU: EVGA GTX 560 Ti 448 Classified
PSU: Antec HCG-620