I can tell you how I OC'ed mine. But I don't think I did it the proper way. In BIOS, disable cool and quiet, c1e support, and, I wasn't sure if I had to disable virtualization, but I did just for the heck of it. I then upped the FSB by 5. Saved and rebooted. Loaded into windows, and ran a stress test for about 5 minutes. If errors occurred, or the system freaked and crashed/rebooted, I would then up the CPU voltage in increments of .025v. Also, I had to downclock my memory so it stayed in advertised speeds. Repeat until you get as high as you want/can go. If you search "AMD Overclockers club" theres a chart with various overclocks and settings. I wouldn't just randomly throw someone else's settings, as every chip is different. But it can give you an idea.
You only need to increase the voltage if you have stability issues and even then do it in small doses.
I suggest you google it and find what other people used and what speeds they reached then start out at a reasonable overclock and experiment to see what you can push your mb/cpu too. The motherboard/chipset will also affect your oc room.
Here is a rough starting position for 3,750 mhz. Bear in mind each chip is different this may or may not work for you. Try not to go higher then 1.5v for cpu vid.
Motherboards label these different things too so use some common sense
FSB: 250 MHZ
CPU VID: 1.475v
CPU NB: 1.2v
HT Link: 2250 MHZ
NB: 2500 MHZ