I just got my new computer about a month ago, and today I tried unlocking the fourth core of my Phenom II X3 740 BE. My motherboard is an Asus M4A88TD-V Evo USB3. The first thing I did was reset my previous overclock, and then I shut down the computer and tried the Asus Core unlock switch on the motherboard. When I tried turning it on, the MemOK light went on and it wouldn't POST. I reset the switch and tried pressing 4 during startup to enable Asus core unlocker. At first it didn't work, same problem as before, but then it turned on just fine. This is the part I have a question about. When booting up, on the motherboard startup screen it says 3 cores were unlocked, not 4. Also, task manager and CPU-Z HW monitor still say 3 cores, but CPU-Z and the windows system info when I right clock my computer and go to properties say I've got an AMD Phenom II X4. CPU-Z says under Specification it's an "AMD Phenom(tm) II X4 40 Peocessor". I wondering why some things say It's still a 3 core, but other say it's a 4 core? And which one should I believe? Is there any way to test it and be certain?