Need Help With Overclocking an Athlon II x4 620 CPU

I need help to overclock my cpu to 3.2 or 3.5ghz any help would be appreciated.
Here are my specs:
Processor: Athlon II x4 620 - Propus Socket AM3(938)
Mobo : ASRock M3N78D (3 PCI, 3 PCI-E x1, 1 PCI-E x16, 4 DDR3 DIMM, Audio, Gigabit LAN)
Chipset: nVIDIA nForce 720D, AMD K10
RAM : Kingston 4 GB DDR3 PC3-10700(667mhz) (2x) - of them
Apacer 2 GB DDR3 PC3-10700H(667mhz) (2x) - of them
GPU:AMD Radeon HD 5670 1GB GDDR5
HDD: Hitachi HDS721050CLA (500 GB)
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  1. Best answer
    You need to increase your HT bis speed. Ht bus*CPU multiplier=CPU frquency. Your max multi is 13. So for 3.2GHz you have to set bus=246MHz. Do this increase in increments, stepswise(10MHz at a time). Before all this,
    1>set you CPU Vcore voltage to 1.35V
    2>set your RAM speed to 1066MHz(5.33 multi),
    3> set your HT speed to 1600MHz(8 multi),
    4> set your CPU-NB speed to 160MHz(8 multi).

    Now do the incremental bus speed increase. At one time you will not be able to boot. Reset BIOS, increase Vcore voltage by 0.025V. Save and see if you can boot. if you can, continue bus speed increase. If you cannot, increase voltage. Don't go above 1.45V for safety. If you can reach 3.2GHz, note down all the multi, bus speed and voltage you manually configured in BIOS, and post here. Then will come stress testing, which I'll tell you later. Always note that you are not exceeding CPU temp of 65degree Celsius.
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