New corei7 920 overclock - few questions.

speeduk · 21 Jun 2009 at 21:30

Spec core i7 920 d0
Gigabyte EX58-UD5
6gig corsair dominator 1866mhz
Fenrir cooler.

Basically I have got to 3.9ghz stable on 1.21v for cpu/ 1.6v for memory and not change any other volts.

Temps reach maybe 80c max. What should I change to get 4ghz + stable? As the pc locks up at 4011mhz?

Thanks!

Edit: Been building and ocing pcs for 7 years and this was one of the easiest builds and overclocks ever.....

FaceplantSi · 22 Jun 2009 at 07:43

Have a look at this thread - same mobo, a few ideas which may help.

speeduk · 27 Jun 2009 at 18:23

I have tried several times changing different voltages and it either just falls over completely or stops being stable at 4ghz? I get a blue screen in windows after 1 minute every time I go over 4ghz. Raising cpu/mem voltage didnt seem to do anything.

Shame because its a sweet chip running on just 1.21v for 4ghz.

BigBruiserAl · 27 Jun 2009 at 22:51

How far have you gone with your vcore and qpi volts

Bradley8988 · 27 Jun 2009 at 23:06

You have Uncore set right? It lock up with ur memory underclocked?

speeduk · 28 Jun 2009 at 17:41

Bradley8988 said:
You have Uncore set right? It lock up with ur memory underclocked?

Im a complete noob sorry. How do i change the uncore?

speeduk · 28 Jun 2009 at 17:42

BigBruiserAl said:
How far have you gone with your vcore and qpi volts

Anything over 1.21v doesnt change stability - it still crashed no matter what.

Changing QPI - cant even boot to bios unless its on auto lol..

BigBruiserAl · 28 Jun 2009 at 17:54

try my settings, see how you do

Cpu ratio - 20x
Bclk - 200
QPI-Auto
IOH=Auto
Vcore= 1.31
Ramvolts=1.64
Mem divider= 6 (underclock)
QPI LinK x36
Turbo Mode - Disabled
Uncore = 17
Load Line Calibration - Enabled

speeduk · 28 Jun 2009 at 17:59

BigBruiserAl said:
try my settings, see how you do

Cpu ratio - 20x
Bclk - 200
QPI-Auto
IOH=Auto
Vcore= 1.31
Ramvolts=1.64
Mem divider= 6 (underclock)
QPI LinK x36
Turbo Mode - Disabled
Uncore = 17
Load Line Calibration - Enabled

Thanks I will give those a try.