i7920 What is your vcore for 4GHz?

[Defiance_co]

CPUz reads 1.376 Vcore (can't rem offhand bios vcore)

That's @ 4.2 (21x200) Do stepping

Watercooled

On a gigabyte ga-x58-ud3r (not the best oc'ing mobo, but stable at these settings)

If i get time i'll drop vcore and raise qpi/vtt and have a play for lower vcore

Temps idle in 22c - 25c room (yes i likes to be warm) 32-36c 100% core usage temps got into the 60's

Prime stable as long as i can be bothered to leave prime running lol

 

[_lecro_]

1.29 @4ghz
qpi 1.37

 

[setter]

Changed mine to 20x200 and had to up voltage to 1.300. My 930 is currently at 3.6ghz on 1.15. Will be interesting to see how it compares to the 920 when i push it higher.

 

[Combat Fighter]

1.31v for 4.2Ghz

 

[ghutchison14078]

1.200 for 3.8Ghz on my 950

 

[setter]

1.200 for 3.8 is very good. You tried pushing it any higher?

 

[twist3d0n3]

i could do 3.8GHz on stock volts (iirc 1.16v), but needed to ramp it to 1.24v for 4GHz. need about 1.38v for 4.2Ghz

 

[youdsy]

i could do 3.8GHz on stock volts (iirc 1.16v), but needed to ramp it to 1.24v for 4GHz. need about 1.38v for 4.2Ghz

im currently at 1.200 V for 3.8. qpi 1.36 cpu PLL 1.94. cant get 4 GHZ stable at all.
any advice?

 

[DaGooN]

posted in other thread..
3.8Ghz i7 920 D0..
1.212 bios -
1.184 under load

http://forums.overclockers.co.uk/showpost.php?p=21012393&postcount=29

 

[blackninja]

My setup ... rock solid stable, this runs a bunch of VMs that are accessed externally so it needs not to crash!

My BIOS settings:

http://img403.imageshack.us/img403/88/imgoc001.jpg

http://img440.imageshack.us/img440/8279/imgoc002.jpg

http://img403.imageshack.us/img403/6152/imgoc003.jpg

http://img193.imageshack.us/img193/1271/imgoc004.jpg

http://img195.imageshack.us/img195/6119/imgoc005.jpg

http://img15.imageshack.us/img15/9919/imgoc006.jpg

http://img840.imageshack.us/img840/7903/imgoc007.jpg

http://img811.imageshack.us/img811/4792/imgoc008.jpg

 

[twist3d0n3]

im currently at 1.200 V for 3.8. qpi 1.36 cpu PLL 1.94. cant get 4 GHZ stable at all.
any advice?

depends on your board really (and obviously the chip itself).

i'm using a gigabyte ud7 (rev1) board, so i found it wasn't the same as clocking on a asus for example (a friend had one and had to do different things here and there to get it stable at 4GHz).

for me, i use settings along the lines of (cba to go into bios to find this out):

Vcore 1.24v
qpi 1.255v
pll 1.7v
qpi pll 1.18v
ioh 1.2v (dual gpu setup, seemed to help)
ich 1.16v

with freq settings:

uncore x17
multi 21
bsclk 191
qpi lowest one without being 'slow mode'

hope that helps

 

[youdsy]

i think my OC is being restricted by my MB. tested to see if i could get pc stable with higher BCLK, but at same CPU frequency etc.. i disabled the turbo boost in bios so multiplier is at 20x. bumped BCLK up to 191 for 3.8GHZ. and it wouldn't get to windows login. had to put qpi V up to 1.46 to get in, as opposed to 1.36 with 181 BCLK. wouldn't last in prime for a minute.

 

[hanluc]

when I had an i7-950 it couldn't do 4.2ghz no matter what, though I did find that it clocked better on an uneven multiplier.

 

[Random Guy]

i7 920 @ 3.6 GHz at stock voltage settings here. Could try and post some CPU-Z screenies tonight if you want.

 

[twist3d0n3]

i think my OC is being restricted by my MB. tested to see if i could get pc stable with higher BCLK, but at same CPU frequency etc.. i disabled the turbo boost in bios so multiplier is at 20x. bumped BCLK up to 191 for 3.8GHZ. and it wouldn't get to windows login. had to put qpi V up to 1.46 to get in, as opposed to 1.36 with 181 BCLK. wouldn't last in prime for a minute.

what mobo do you have?

gigabytes seem to prefer odd multi (21x for example) whereas asus seem to prefer even multi's. not sure about anything else though...

 

[youdsy]

what mobo do you have?

gigabytes seem to prefer odd multi (21x for example) whereas asus seem to prefer even multi's. not sure about anything else though...

gigabyte g1 sniper