[halo0]

So I've been reading up on here for a couple of weeks and finally started experimenting this weekend with OC'ing my new rig I just built. But it seems I am needing way more voltage to get the same speeds others are getting. I am currently at 3.8GHz and these setting represent the lowest vcore I could run stable (prime95). My high temps touch 80 occasionally so I've stopped here.

21x
bclk: 181
mem: 8x
vcore: 1.38125
qpi/vtt: 1.335
dram: 1.64
cpu pll: 1.88
ioh core: 1.3
qpi/pll: 1.3
ich i/o: 1.35
ich core: 1.3
LLC: level1

Am I doing something wrong or do I just have a bad chip?

 

[Hey Zeus]

I'm going to pull out the picard.. One second please.....

Ok.. Lets simply this.....

Reboot
Go into bios
Load optimal defaults
Set Vcore to 1.3
BCLK to 200
Dimm voltage to whatever your dimm voltage is
Memory Multiplier to whatever memory you have
Save changes
Reboot
Enjoy 4Ghz

 

[halo0]

I admit to being a n00b at this. I tend to prefer this one though

 

[Hey Zeus]

Quote:

Originally Posted by halo0 I admit to being a n00b at this. I tend to prefer this one though

We're all noobs at one time bro. Just do what i said and see what happens. You don't need to make a lot of changes to start out.

 

[halo0]

Quote:

Originally Posted by Hey Zeus Ok.. Lets simply this..... Reboot Go into bios Load optimal defaults Set Vcore to 1.3 BCLK to 200 Dimm voltage to whatever your dimm voltage is Memory Multiplier to whatever memory you have Save changes Reboot Enjoy 4Ghz

I did follow this guide (http://www.overclock.net/intel-cpus/...7-920-4-a.html). I tried both methods 1 and 2 and I either could not boot, or would crash as soon as I ran prime. Can you elaborate a little on what I have wrong?

 

[tipsycoma]

Quote:

Originally Posted by Hey Zeus I'm going to pull out the picard.. One second please..... Ok.. Lets simply this..... Reboot Go into bios Load optimal defaults Set Vcore to 1.3 BCLK to 200 Dimm voltage to whatever your dimm voltage is Memory Multiplier to whatever memory you have Save changes Reboot Enjoy 4Ghz

200 x 21 is 4200, meaning 4.2ghz. Not everyone's chip hits 4.2 on 1.3v.

I'd try a bclk of 190 to start out with.

 

[Hey Zeus]

Quote:

Originally Posted by tipsycoma 200 x 21 is 4200, meaning 4.2ghz. Not everyone's chip hits 4.2 on 1.3v. I'd try a bclk of 190 to start out with.

My bad. Disable turbo

It took my C0 1.35v to hit 4.2Ghz. Let me see if i could find it.

 

[halo0]

The default multiplier was 20 before I changed it...

I read that 21 was more stable which is why I tried that.

Alright guys, I'll give that a try with disabling turbo.

 

[Varjo]

Quote:

Originally Posted by Hey Zeus My bad. Disable turbo It took my C0 1.35v to hit 4.2Ghz. Let me see if i could find it.

No, stop giving advice if you have no idea what you're talking about.

DON'T DISABLE TURBO i7s tend to like odd multipliers, running at x20 is usually not the best idea, x21 tends to work much better.

Second of all, OP's settings didn't look bad, I would say, yea OP, your chip isn't the best. No reason you can't hit 4 ghz though. May need more vtt voltage.

Edit: You could also try lowering CPU PLL, run a memtest to eliminate ram as the issue, or perhaps you need more Vcore (Some D0s can be power hungry).

 

[reaper~]

Might wanna look into different cooler also. I used to have a V8 and it didn't help lower the temps too much.

 

[Hey Zeus]

Quote:

Originally Posted by Varjo No, stop giving advice if you have no idea what you're talking about. DON'T DISABLE TURBO i7s tend to like odd multipliers, running at x20 is usually not the best idea, x21 tends to work much better. Second of all, OP's settings didn't look bad, I would say, yea OP, your chip isn't the best. No reason you can't hit 4 ghz though. May need more vtt voltage. Edit: You could also try lowering CPU PLL, run a memtest to eliminate ram as the issue, or perhaps you need more Vcore (Some D0s can be power hungry).

Look above and ask again if i don't know what i'm talking about.

 

[Varjo]

Quote:

Originally Posted by Hey Zeus Look above and ask again if i don't know what i'm talking about.

You had a nice chip and got a decent overclock. Congrats. You still don't know what the hell you're talking about or you wouldn't have told him to use an even multiplier. You would have also recognized that his voltages are very reasonable as a starting point to overclock.

 

[halo0]

I got through LinX on the default test. Is this sufficient to eliminate ram from the equation or should I try another utility?

 

[paulo dourado]

Quote:

Originally Posted by halo0 I got through LinX on the default test. Is this sufficient to eliminate ram from the equation or should I try another utility?

pass 5 hours of p95, max stress and burn

 

[Z Overlord]

OP, make sure LLC is on and that Vdroop is reduced by it (that's what LLC does)

It will help you gain stability at lower volts

 

[MasterFire]

Might want to try 19x multi sometimes, I can hit 4ghz on a lower voltage with the 19*211 than the 21*190 (or the 191 for that matter).

Requires more QPI voltage though.

 

[Clockadile Dundee]

Quote:

Originally Posted by Z Overlord OP, make sure LLC is on and that Vdroop is reduced by it (that's what LLC does) It will help you gain stability at lower volts

I recommend sorting out the OC first, with vDroop on, and then trying that. It may just be certain x58 boards or chips (or even my specific chip), but I have found that LLC can sometimes cause instability; because of this, it may add another variable, and of course you want to eliminate as many variables as possible for an initial OC.

 

[halo0]

I ram memtest on my ram, no errors.

My board has 2 levels of LLC, I am at level 1. Here are my current numbers.
http://valid.canardpc.com/show_oc.php?id=1077585

Maybe I should try level2 LLC.

 

[Slightly skewed]

Quote:

Originally Posted by MasterFire Might want to try 19x multi sometimes, I can hit 4ghz on a lower voltage with the 19*211 than the 21*190 (or the 191 for that matter). Requires more QPI voltage though.

Yes, i'd try a 19x multi. That and 6x mem multi. Worry about the CPU OC before trying to adjust the ram.

I also did some research when I bought my board, (many months ago) and came across alot of Gigabyte owners who had trouble getting 4Ghz. That's why I stayed away from that board.

 

[halo0]

Something in my system does not seem to like 19x, won't even boot most times.

What about the uncore multiplier? I had it set on 19 when I posted my original numbers, then I reset the bios to optimum settings(worst mistake I ever made because it took many tries to get everything back to where it was), and when I re-entered all my original stable 3.8GHz settings I kept crashing in the first few seconds of prime. Now it's back to 19 and prime is running fine.