Core i7 Overclocking by Batch #

[Factotum]

hi guys
my Ci7 920 batch: 3839A626
209x21 LinX 20 times of run and prime blend stable
HT OFF
Uncore =209x16
DRAM = 209x8 8-8-8-21 1T
Vcore = 1.376[load linx 5100mb use]/1.392[load prime blend]/1.424idle
CPU VTT = 1.344load/1.328idle
vDIMM = 1.616

[Jelles]

Hello ppl, my first post.

Since a couple of days i own a i& 920 system.

Oc'ing this system doesnt go without any problem

Setup:
920 batch 3837B387
msi x58 pro
ocz 3x1gb 12800 7-7-7-1t

Stress temps are 60-65 degrees with Scythe Mugen 2

The following settings are prime stable.

BLCK = 185 (3700Mhz)
HT= off
C1E = off
EIST = off
TB= off
Multi = 20x
memoru = auto (1110 mhz cpuz)
6-6-6-1t (cause of the low mem mhz)
uncore = auto (2970mhz cpuz)
CPU v = 1.376 (bios)
CPU PLL v = auto
QPI v = +0.1 = 1.045+0.1 = 1.145v
DRAM v = 1.59 (diffirence within 0.5v to QPI v)
NB v = auto
ICH v = auto

The following changes do not improve stability
- lock dram ratio on 4 and uncore on 8 system not stable. also when i put 1.65v on dram.

- BLCK 190 system not stable.

- HT on

I dont want go higher than 1.376 with cpu voltage. But i see many ppl that hit 3800 with 1.25-1.3v
I know that not everyone cpu is the same. But i guess understand my stress with B batch cpu.

Any tips are welcom you need more info about setup just let me know.

[ewitte]

Not posting complete specs until I can get a Prime screenshot (can't leave running that long on the stock cooler). 3844a361 booted and ran spi 19x211 1.2v but prime failed. Seems fine on 1.225v though Not bad for air even if I had to go to 1.25!

[jcniest5]

Not posting complete specs until I can get a Prime screenshot (can't leave running that long on the stock cooler). 3844a361 booted and ran spi 19x211 1.2v but prime failed. Seems fine on 1.225v though Not bad for air even if I had to go to 1.25!

What mobo are you using? Does your CPU defaults to 1.08V Vcore as well when you leave everything at stock? Mine does...but my brother's defaults to 1.16V Vcore when everything is left at Auto (stock) and his is 3842A594 (vs. mine is the same as yours). I think the latest batch defaults to a lower Vcore when everything is set to Auto. It would be interesting to know IF the latest batch really defaults to a lower Vcore or if mine is the only one.

[ewitte]

What mobo are you using? Does your CPU defaults to 1.08V Vcore as well when you leave everything at stock? Mine does...but my brother's defaults to 1.16V Vcore when everything is left at Auto (stock) and his is 3842A594 (vs. mine is the same as yours). I think the latest batch defaults to a lower Vcore when everything is set to Auto. It would be interesting to know IF the latest batch really defaults to a lower Vcore or if mine is the only one.

p6t deluxe. Yes it says 1.08v in BIOS on auto. Right now until I get better cooling its actually looking stable 2.67Ghz .95v BIOS (.944v shows CPU-z with 8 cores going in prime).

http://s150233688.onlinehome.us/primeLowVolts.jpg

[jcniest5]

p6t deluxe. Yes it says 1.08v in BIOS on auto. Right now until I get better cooling its actually looking stable 2.67Ghz .95v BIOS (.944v shows CPU-z with 8 cores going in prime).

http://s150233688.onlinehome.us/primeLowVolts.jpg

Not sure if it makes any difference if I use a different mobo than yours (Asus P6T Deluxe vs. MSI X58 Platinum SLI) but I might try the .950V VCore as well to see if it's stable. It would be cool IF I can get it to run with that low VCore. It would stay pretty cool. What kind of temp do you get with that low VCore?

[ewitte]

Not sure if it makes any difference if I use a different mobo than yours (Asus P6T Deluxe vs. MSI X58 Platinum SLI) but I might try the .950V VCore as well to see if it's stable. It would be cool IF I can get it to run with that low VCore. It would stay pretty cool. What kind of temp do you get with that low VCore?

Its still getting in the 70's under prime. This intel HSF is sucking. Those push pins are not holding it very good against the heat spreader. Its barely touching and I had to apply thermal compound to both sides just for that or the gap is too much. Its definately getting better cooling ASAP.

[diablos]

3842a951
someone know somethink about this batch?

thanks