Need help overclocking i7-4820k

[Joexyo]

Hi! So far ive only reached 4.8ghz stable, the bios can actually overclock higher than what i can achieve manually.
So here is my setup. If i go beyond 5ghz it just wont load windows.

Windows 8.1 64bit (fully updated)
Intel i7-4820k (3700) clocked with just multiplier up to 47 while everything else is running on Auto.
Asus Rampage iv Extreme 2011 (latest BIOS)
Kingston DDR3 HyperX Predator 8GB 2400Mhz, 2x4GB, heat spreader, CL11-13-13, 240 pi (Running stock at 1600, Auto)
Crucial 60g 2x Raid0
Seagate Barracuda® 500GB 2x in Raid 0
Crucial CT480 500g Normal
Radeon r9 290x 2x 4gb CF
Corsair Power supply 860i Platium (Power seems to be fine , asuming if it where drawing more power it would become hotter right ?)
12v Pump running full speed , almost every component is water cooled, so heat is no issue here.

cpu temp at 4.7ghz is ~30c and graphic cards at ~30c, PCH ~29c the rest is below 30c
At 100% load cpu temp is at 55c and the rest just move up 1c . (prime95)

Ive tried out so many things, feels like im missing out on something.
It also wont let me choose vcore voltage past 1.550v .
Is it even possible to go beyond 5ghz with this setup ?

Thanks in advance 😉

[Nate152]

Hello Joexyo and welcome to the ROG forum.

Have you done any testing to see where your temps are with 4.8GHz? You can go past 1.55v but are you sure you want to do this? You could send your cpu to an early graveyard past 1.55v.

What are your temps at 4.8GHz and what voltage is needed?

[Joexyo]

Nate152 wrote:
Hello Joexyo and welcome to the ROG forum.

Have you done any testing to see where your temps are with 4.8GHz? You can go past 1.55v but are you sure you want to do this? You could send your cpu to an early graveyard past 1.55v.

What are your temps at 4.8GHz and what voltage is needed?

Hi , Thanks 😉

Yeah forgot to write that in next to idle temps, But yeah ive tried out couple of sress tests (prime95 ex)
At 100% load cpu temp is at 55c and the rest just move up 1c .

[HiVizMan]

If you want to go higher with your voltage change the jumper on your board to LN2 mode.

Honestly I would say that your system has pretty much got to where it can go, 4.8GHz is a pretty good clock for a system.

[Joexyo]

HiVizMan wrote:
If you want to go higher with your voltage change the jumper on your board to LN2 mode.

Honestly I would say that your system has pretty much got to where it can go, 4.8GHz is a pretty good clock for a system.

Yeah i agree, But i still want to see its potentsial 😜
Tried to move the LN2 jumper , doesnt seems to Enable in bios.

[Nate152]

Well, your temps say you can go higher but there is a point where your cpu will hit a wall and will need alot more voltage to hit the next 100MHz, it's possible you are there. You can do as HiVizMan suggested to get past 1.55v or you can go to the monitoring tab and set cpu voltage to ignore, this should also let you go past 1.55v.

Just so you know you are entering risky territory with your voltage.

[Joexyo]

Nate152 wrote:
Well, your temps say you can go higher but there is a point where your cpu will hit a wall and will need alot more voltage to hit the next 100MHz, it's possible you are there. You can do as HiVizMan suggested to get past 1.55v or you can go to the monitoring tab and set cpu voltage to ignore, this should also let you go past 1.55v.

Just so you know you are entering risky territory with your voltage.

how risky are we talking about ? 😜

[Nate152]

Risky enough to fry your cpu. I personally would not take it past 1.65v and even then you could be asking for trouble. I say this with caution as you just don't know when it's gonna blow and you definitely don't want that.

[Joexyo]

Nate152 wrote:
Risky enough to fry your cpu. I personally would not take it past 1.65v and even then you could be asking for trouble. I say this with caution as you just don't know when it's gonna blow and you definitely don't want that.

yeah thought so to.
Well thank you atleast for the heads up.
Now that i know its not worth it when, 4.7 auto clock works fine neitherway 😄

[Nate152]

As HiVizMan said and I agree, 4.8GHz is a great overclock. If you want your cpu to last a good while longer, stick with that.