Need help OC E6750 to 3.5 or 3.6 Ghz

[blackbyron]

Greetings, I'm new to this forum. I have less experience in overclocking. I need help to run E6750 on 3.5 Ghz and when I do a Bless test on Prime95, it failed about 5 seconds. I raised up CPU Voltage to 1.37 and also raised up NB a bit. Then I booted up to windows, open cpu-z and run a stress test, but the problem is cpu-z doesn't show my core voltage is 1.37 underload, instead it showed 1.288 V. what the heck? Can it be because of speedstep causing this?

 

I have IP35-E and Cruical Ballistic 4 GB. Any help would be appreciated it.

 

Thanks

[blackbyron]

bump

[Kingfisher]

The difference you are seeing in cpu-z voltage compared to BIOS voltage is called v-droop and is common on motherboards.

 

Some newer boards have a BIOS option setting called load line calibration to help correct v-droop. Some folks also have modded their v-droop issue using #2 pencil.

 

I personally don't enable LLC or worry about v-droop , others do. Its a preferance thing.

 

As for your struggle with reaching 3.6 ghz you seem to know what to do but it may be a case where your chip can't.

 

Check your cooling temps and keep playing with your cpu and nb voltages.

[maj0rgamer]

have you tried disabling speedstep?

 

this may correct the problem.

 

you should also disable spread spectrum in bios if it's an available option, as it may inhibit overclocking results.

Edited May 22, 2009 by Maj0r Gamer

[blackbyron]

Thanks for the reply, yeah I was about think about disable speedstep. My temps seems fine.

But speedstep saves my cpu energy, I'll reply back to you guys if I have it successful

[blackbyron]

Ok, I can't find spread spectrum, but I disabled speedstep. Then I clocked to 3.60 GHz, played around voltages, but somehow it failed to boot windows and no luck.

 

Right Now I'm running in 3.4 GHz stable.

Here are the voltage settings and clock settings:

External clock : 425 Mhz

Multiplier: 8x

DRAM Speed 1:1 DDR2 850

Cpu Core Voltage: stock voltage

DDR2 Voltage: 2.05 V

CPU VTT: 1.200000V

CPU GTLREF 63.0%

Northbridge and Southbridge: in stock voltage

Hope my explanation looks reasonable

Edited May 23, 2009 by blackbyron

[psycho_terror]

Cpu Core Voltage: stock voltage

i recently sold my E6750, but it took 1.5v (actual) to get it stable at 3.8ghz.

 

of course every chip is different, but beyond 3.4ghz i started seeing much less overclock per voltage bump.

[blackbyron]

bump

[blooder11181]

try to use vcore 1.40 to 1.50

on q6600 i use 1.5 to get 3.6ghz

[blackbyron]

try to use vcore 1.40 to 1.50

on q6600 i use 1.5 to get 3.6ghz

 

Thanks for the reply, what other voltage settings besides Vcore?

Northbridge, southbridge ,etc.

Also did you disable spread spectrum?

I know it depends on the motherboard, but showing me voltage settings really help.

[blackbyron]

bump

[jgv115]

I normally put chipset voltages to auto. (that's just me though)