i7 920 overclocking help!

[[H]adouken]

Right now I'm @ 3.8GHz with a QPI of 190. I can't seem to get past this wall, even with a 3841A batch processor it's requiring a lot of voltage to hold its own, I'm at 1.37 at the moment and way too lazy to keep running P95 for 12 hours everytime I move down a notch.

QPI of 200 = forget it, MACHINE_CHECK_EXCEPTION BSOD before Window's load, something like that. Anyone have any tips on hitting 200 w/ low voltage?

Also my ram is rated at 8-8-8-24, do I have to loosen it to 9-9-9-24 for any reason?

*edit: please move to overclocking forum, completely forgot about it.

 

[vanilla_guerilla]

shouldnt have to if its ddr3 1600. just because it has the "right" batch number doesnt mean it will be a great oc chip. try bumping up your uncore voltage, some boards its called vtt. try around 1.35v to 1.4v. otherwise, you may have to bump up vcore a bit. 1.37 isnt really a ton of voltage for an i7.


edit i see you have the evga. follow this post and get an easy 4200mhz.

http://www.evga.com/forums/tm.asp?m=642527

 

[magoo]

Here's my stuff for an OC of 4.0

No Droop
VCore 1.425
VTT +200mV
PLL auto
VDimm 1.65
DimmDQ 0
QPI PLL 1.25
IOH Core 1.25
IOH/ICH 1.65
ICH Core 1.175
PWM 1067
Memory ratio 2:8
BCLK 195 + Turbo

Watercooled, load temps under normal 3D < 40C, 8 Core Orthos = 65C

 

[[H]adouken]

Well I'm trying to get 4.0GHz w/o a VCORE of 1.4, but I guess even though my batch number is good this CPU is an unlucky one. I'm @ 1.35 right now and P95 stable for 4 hours so for, @ 3.8GHz.

@magoo: yeah I got all those settings but just vcore is lower for me, I'm not sure if > 1.4v would cause my idle/load temps to significantly increase, seems like a lot of people avoid it if they dont get lucky.

@vanilla_guerilla: my VTT is 1.4 right now, otherwise I get lots of stop:124 BSODs, I used shansmi's guide on evga forums instead of Jacobs, seems like most people get the best results from him. Jacob uses way more than 1.4V on the VCORE, which I'm trying to avoid. Perhaps my CPU can do 4.0GHz, but I'm just being very lazy as I'm not sure how to get there stable without bumping the VCORE. The other settings are overwhelming for a first time OCer.

 

[magoo]

Like any other CPU, you just gotta crank the VCore.

 

[PC_User]

Here are my settings for 4.0 GHz - LinX stable, IBT stable, Prime95 stable (only 20 minutes)

Vcore - 1.3750 (BIOS)
QPI/VTT voltage - 1.30
QPI Link - x36
Uncore Frequency - 3200
BCLK - 200
Clock Ratio - 20
Memory Multi - 8x
DRAM - 1.54
HT Off
Turbo Off
Performance Enhance: Standard

No guarantees that your overclock will be successful at the above settings but you can give it a try. I'm running 6GB G.Skill DDR3 1600 ram with voltage of 1.5-1.6 and 9-9-9-24 timings. Set those manually in BIOS as well.

 

[auceny]

the best help you can get is from the evga forum. fill out the bios template and ask for help getting over 3.8 and people are sure to reply with helpful suggestions.

 

[spenny2112]

Right now I'm @ 3.8GHz with a QPI of 190. I can't seem to get past this wall, even with a 3841A batch processor it's requiring a lot of voltage to hold its own, I'm at 1.37 at the moment and way too lazy to keep running P95 for 12 hours everytime I move down a notch.

QPI of 200 = forget it, MACHINE_CHECK_EXCEPTION BSOD before Window's load, something like that. Anyone have any tips on hitting 200 w/ low voltage?

Also my ram is rated at 8-8-8-24, do I have to loosen it to 9-9-9-24 for any reason?

*edit: please move to overclocking forum, completely forgot about it.

You can't base a processor's overclocking potential off of the first five numbers/letters of its batch number. You have to consider the whole batch number in order to accurately predict its potential. I have batch number 3842A567 and it hits 4Ghz with just 1.29vCore, Prime stable.