Intel i7 3820 OC

[Tee_k]

Hi, i tried searching for some relevant info regarding this, but couldn't seem to find one, so made this post. 

As Topic says, i'm running an Intel i7-3820 on a Gigabyte GA-X79-UD3 Motherboard.

At first, i just oc`ed it with EasyTune6, stage 2 @4.08, BCLK 102Mhz. But i start noticing that people around the web with the same cpu, got better clock. 

So i tried it out. Went on to youtube, found a guy with same chip and same line of MB as me, and copy hes BIOS settings.

4.4Ghz @ 1.4v, was acheived (turbo mode enabled) seemed stable after 4-5 hours of prime95. ( i did not check the temps unfortunately, which was stupid of me ) I then tried gaming some BF4 and WoW, just to see if i could see any difference. 

In WoW(world of warcraft) I didn't notice a thing difference, and that game is very CPU demanding (so i've heard).. 

In BF4 i noticed that some of the few lag spikes that i've had earlier didn't accour.. But when i logged back out and noticed the temps @ 91C! (this is with a Kraken x60 and 2x Noctua fans set to push, in an NZXT H630 Case) i paniced and reset the BIOS back to default, and i haven't touched it after that. (now at stock speed)...

So.. I guess i pushed to much Volt at the chip, but the system was stable, didn't experience any errors or bluescreens at all, but 91C with a Kraken x60?? Like, that is WAY out of my comfort zone.. 


I guess what i'm asking is, did i run to much Volt for the assigned clock speed? what should my stable OC (aim) be with this chip and with this setup.? 


Best regards
- Tee_k

 

[Shd0w2]

What graphic card are you running?

[WoodenMarker]

1.4v is pretty high. You should try lowering it. 4.4 ghz is fine. You're probably just overshooting the voltage.

WoW can be very cpu heavy but not in all situations. Try a 25-man raid and you'll likely see the difference then.

[Tee_k]

Oh, i'm sorry for not mentioning anything about that.. 

1x Asus Radeon Matrix Platinum R9-280X 
1x Asus Radeon 7970 DirectCU II

In Crossfire.. 

12gb of Kingston HyperX 1866mhz ram

And a Corsair HX850W PSU

[TheNinjaNextDor]

Don't use the OC utility with your motherboard. It always gives you more voltage than you need.

 

Go in and lower the voltage until it becomes unstable and find a point just above that. 1.4V and 90C is too high.

[ohJey]

I don't use intel chips, but can't you get 4.4GHz at like 1.3v?

[Tee_k]

Don't use the OC utility with your motherboard. It always gives you more voltage than you need.

 

Go in and lower the voltage until it becomes unstable and find a point just above that. 1.4V and 90C is too high.

Oh, i did not know that.. Thanks for clearing that up! 

So ill just start at 1.3 then? and work my way slowly up? 

[Faa]

Lock the bclk to 100.00MHz.

[Tee_k]

Lock the bclk to 100.00MHz.

Oh, why is that? Shouldn't that increese with the clock speed? 

[Faa]

Oh, why is that? Shouldn't that increese with the clock speed? 

Because it's harder to get your cpu stable with a higher bclk. Lock your cpu pll voltage to 1.80V as well

[Tee_k]

Because it's harder to get your cpu stable with a higher bclk. Lock your cpu pll voltage to 1.80V as well

Roger that!  

[Guest Generallee]

Dat crossfire doe 

[Tee_k]

Ok, set the multiplier to 43, 1.35V, locked the BCLK to 100. And it booted right up. But, how did i manage to get 4,4Ghz last time? When this CPU has a locked multiplier at 43? 

I shall prime it tonight, see if its stable.. I think i can lower the Volts more.. After 15 mins of prime i didn't get higher than 77.. And that is okay. I don't want to go over 80C..

But.. Should i enable Turbo mode? or should i not?.. Some say i should and others say not..