Overclocking i7 2600k-can u help me?

[HuNTeR-]

Hi all.I decided to overclock my CPU i7 2600k sandy bridge to 4.0 ghz and im wondering if voltages on processor are ok,and if my overclock seems to be fine.Also I mentioned I have air coling,not water.I have Zerotherm Nirvana NV120 Premium
My motherboard is asus p8p67 pro rev 3.1 and the setting for overclock :
1.Advanced
-CPU Ratio- 40
-Enhanced Intel Stepside-Disabled
-Intel adaptive thermal monitor-Disabled
-Turbo Mode-Enabled
-Intel Virtualization-Disabled
2.Tweaker
-EPU power-Disabled
-memory freqwency-here I don t now if I let to 1333 or 1600 MHz
-dram timing- ? ? ?
-CPu PLL Voltages 1.800 v ?
3.Load Line calibration
-vram freq -Extreme
-phase control-auto
-Duty control-Extreme
CPU voltage-1.20V, 1.31V-Manual Mode -I wondering if these voltages are OK,or if are high
Dram Voltage-1.509 V
save changes and reset!

Plese tell me if this manual overclocking are fine,if voltage memory are ok and if I need higher memory ram.For the moment I have 1333 MHZ memory

 

[Burpo]

Looks good, but I'd leave Enhanced Intel Speedstep enabled, as well as Intel adaptive thermal monitor.
If your ram is DDR3 PC 12800 then it should run at 1600 with 9-9-9-24 timings.

 

[.vodka]

I agree with Burpo, EIST, C-states, thermal monitor should be enabled, no need for the CPU to be at 4GHz all the time when it's probably going to be idling 80% of the time at the very least.

Nah, you definitely *do not* need 1.3v for 4GHz on Sandy (unless you didn't get lucky with the silicon lottery). That's 4.5GHz territory for that voltage if you got an average/common chip. If you want to keep it at 4GHz, then drop down to 1.25v, then 1.2v, then 1.15v, etc, until stress testing (P95 blend is good for this) fails at one of these steps. You'll be able to shave off an important chunk off that and get much better temperatures and power consumption in exchange.

Once you're confident enough you should use offset voltages, so when the CPU is idling it'll be fed with 0.9-1v and under load, 1.1-1.2v or whatever your CPU needs for stability at these clocks. But offset voltages are just fine tuning at this point, concentrate on bringing vcore down first.

 

[HuNTeR-]

so what are you trying to say is:
core voltage 1.3v is too big for only 4 ghz?1.3v is for 4.40 ghz?
But in generaly speaking 1.3 v is safe for this processor?

 

[Prey2big]

1.3V is safe. You could probably hit, atleast, 4.3-4.4 GHz without over-extending.

 

[.vodka]

It's safe, but overkill for 4GHz. If your cooling solution allows, that's enough for at least 300-500 MHz more depending on how good your CPU is.

 

[guskline]

Relax. Very good temps. Enjoy the OC.

 

[moonbogg]

I had my 2600k at 4.3ghz and I didn't change anything except the multiplier. Auto voltage ended up around 1.28. I went as high as 4.6 and never needed to mess with any of those other voltage or power settings. All they do is create confusion and heat unless you are going for an insane OC where you must fine tune, but a 2600k will do 4.3 without even trying.
Same went for my current 3930k which is just a 2600k with 2 more cores. I had it at 4.3 without changing a damn thing and it hit 1.28 volts on auto voltage, nothing else changed. I left all those power settings to default, standard or off. I have it at 4.6 now but I changed the CPU voltage just a little to get there. Its around 1.3 now under load if I recall correctly. 2600k would also probably hit 4.6 with 1.3 volts or around there.