How to see if your system is stable while overclocking

[simonwetting]

I'm very new to overclocking and I'm really bad at it. I can't overclock higher than 5 %. It is not because my hardware is bad because I can auto overclock to 29 % without any trouble. For my cpu I can adjust 10 voltages and I really don't understand it anymore. Can anybody explain me why there are multiple voltages in the cpu and which voltage does what.

My English is maybe bad because I am dutch.

 

[linnemeyerhere]

Simonwetting,
This is where you want to detail all of your system details in My System Specs.

 

[simonwetting]

Motherboard:Asus Rampage IV Extreme
CPU: Intel i7 3820 K
GPU: AMD Radeon 7770
Cooling: Corsair H100
RAM: 4 x 4 GB G skill Ripjaw z 1600 Mhz stock frequency

baseclock 100 Mhz
Multiplier 37
cpu vcore voltage 1.240
cpu vccsa voltage 0.865
cpu pll voltage 1.8
vtt cpu voltage 1.1
2nd vtt cpu voltage 1.05099
pch1.1VG voltage 1.10387
dram cha ctrl voltage 0.5
drama cha data voltage 0.5
dram chb ctrl voltage 0.5
pch 1.1 voltage 1.1
pch 1.5 voltage 1.5
vttddr ab voltage 0.75
vttddr cd voltage 0.75
dram CHAB voltage 1.5
dram chcd voltage 1.5
dram chb data voltage 0.5
dram chc ctrl voltage 0.5
dram chc data voltage 0.5
dram chd ctrl voltage 0.5
dram chd data voltage 0.5
vga1 core voltage 0.0
vga1 mem voltage 0.0
vga1 pll voltage 0.0
vga2 core voltage 0.0
vga2 mem voltage 0.0
vga2 pll voltage 0.0