Core i7 Overclocking thread

[lee63]

Post em here :D

http://img3.imageshack.us/img3/9342/86440209.jpg (http://imageshack.us)

EDIT: My stable OC http://www.nvnews.net/vbulletin/showpost.php?p=1945472&postcount=28 :D

[methimpikehoses]

Nice Lee, what batch is that?

[lee63]

Nice Lee, what batch is that?

Its a batch #3837B317, that was just a quick test... I'm gonna run it for a couple of hours tomorrow. 1.38v in bios BTW

[LordJuanlo]

Still haven't tried to OC mine, will do some day

[bob saget]

post what coolers you have guys.

[lee63]

post what coolers you have guys.I'm using the TRUE Back 120.

http://img210.imageshack.us/img210/4629/i7v.jpg (http://img210.imageshack.us/my.php?image=i7v.jpg)

[Logical]

Nice results lee, you getting similar temps as i am getting at 3.6Ghz only your Voltage regulator is a little warmer.

[methimpikehoses]

So what's a good temp/voltage range for the i7 920?

[Logical]

If i see my cores go above 90c in stress testing then i turn the test off and go back to the drawing board...This for me has been an issue with my 4.0Ghz profile as i cannot for the life of me keep the cores below 90c

Under stress testing, imo anything below 85c on the cores is fine. keep your eye on the VREG as this too needs to be below 85c. If you find the vreg does get too hot try lowering the PWM.

Heres my results after 10mins of prime small fft's at 3.6Ghz, still working on the 4.0Ghz profile (i think a HSf reseat might be in order).

http://img19.imageshack.us/img19/4721/36ghz1309load.jpg (http://img19.imageshack.us/my.php?image=36ghz1309load.jpg)
http://img19.imageshack.us/img19/36ghz1309load.jpg/1/w1280.png (http://g.imageshack.us/img19/36ghz1309load.jpg/1/)

[lee63]

So what's a good temp/voltage range for the i7 920? I think around 70 - 75 max under load is good, Intel's max vcore is 1.35... someone correct me if I'm wrong.

This is 100% stable, still working on the 4GHz+ :headexplode:

http://img9.imageshack.us/img9/4871/occt.jpg (http://img9.imageshack.us/my.php?image=occt.jpg)

[Muppet]

The easiest way to get 4.0Ghz out of the 920 is to run 191Vtt x 19 with turbo enabled. You will need way less voltage than trying to run 200Vtt x 20. I can run 191x19 primestable at 1.375 volts. I need 1.49 volts for 200x20, very big difference.

[lee63]

The easiest way to get 4.0Ghz out of the 920 is to run 191Vtt x 19 with turbo enabled. You will need way less voltage than trying to run 200Vtt x 20. I can run 191x19 primestable at 1.375 volts. I need 1.49 volts for 200x20, very big difference.But does Turbo OC all four cores ? I thought it only OCs one. Im gonna try those settings.... thanks :D

[Muppet]

But does Turbo OC all four cores ? I thought it only OCs one. Im gonna try those settings.... thanks :D

It does overclock all cores on my Gigabyte. Initially it was only one on the Asus boards, but now its all cores.

[lee63]

It does overclock all cores on my Gigabyte. Initially it was only one on the Asus boards, but now its all cores.What speed is your ram running @?

[Logical]

I fail to see any reason to run turbo mode if the multiplier is less than 20x

Correct me if im wrong but doesnt turbo mode add 1 to the multiplier....

so in reality 19x190 with turbo is the same as 20x190 without turbo?

For 4.0Ghz with a 190 QPI you need to have a 20x multiplier with turbo enabled. A 200 QPI is more ram specific and would give 1600Mhz on a 2/8 ratio @4.0Ghz

[Muppet]

I fail to see any reason to run turbo mode if the multiplier is less than 20x

Correct me if im wrong but doesnt turbo mode add 1 to the multiplier....

so in reality 19x190 with turbo is the same as 20x190 without turbo?

For 4.0Ghz with a 190 QPI you need to have a 20x multiplier with turbo enabled. A 200 QPI is more ram specific and would give 1600Mhz on a 2/8 ratio @4.0Ghz

No, running turbo on a 19x multi will result in a 21x multi. Turbo takes it to 21.

[Muppet]

What speed is your ram running @?

Ram is running at 1568mhz. There is no difference between that and 1600mhz.

[Logical]

No, running turbo on a 19x multi will result in a 21x multi. Turbo takes it to 21.

Yes indeed you are correct, but i still dont see the point in having to lower the multiplier to 19x if your are going to use turbo.

Also what are the tmps like with that overclock muppet ?

Did any of you use a washer or similar under the TRUE mounting bracket to secure it more?....mine seems a little on the loose side and there is movement with very little pressure.

[hell_of_doom227]

So Turbo should be disabled? What Turbo does anyway?

[Muppet]

Yes indeed you are correct, but i still dont see the point in having to lower the multiplier to 19x if your are going to use turbo.

Also what are the tmps like with that overclock muppet ?

Did any of you use a washer or similar under the TRUE mounting bracket to secure it more?....mine seems a little on the loose side and there is movement with very little pressure.

Because it's not the 20x multi that is the issue, but the 200Vtt that's the problem. you can probably run 20x191 with turbo enabled. I just haven't tried that.

[lee63]

So Turbo should be disabled? What Turbo does anyway?
This should explain it http://download.intel.com/design/processor/applnots/320354.pdf?iid=tech_tb+paper

[DarthBeavis]

Any guesses what I can get to with a D0 stepping 965 on a Rampage II Extreme board? Will use 12 gig of Crucial Ballistix Tracer DDR 3 Triple Channel rated at 1600

[lee63]

Any guesses what I can get to with a D0 stepping 965 on a Rampage II Extreme board? Will use 12 gig of Crucial Ballistix Tracer DDR 3 Triple Channel rated at 1600I'm interested to see the difference between the old stepping and the new D0....with HT on of course.

[Muppet]

Any guesses what I can get to with a D0 stepping 965 on a Rampage II Extreme board? Will use 12 gig of Crucial Ballistix Tracer DDR 3 Triple Channel rated at 1600

The biggest question is "what sort of cooling are you using" It's just that anything over 4.2 needs better than air to cool it for long periods.

[methimpikehoses]

Is thermal paste application on those i7's the same as on the core2 quads? I had the best luck with a thin line running north/south across the heat spreader on my q6600.