Core i7 day-to-day overclock

jandlecack

Senior member
Apr 25, 2009
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What's yours?

After my initial OC to see how far I could get with minimal voltage increase, I settled on 3.2 for a while, then 3.4, and now 3.8 with an insignificant voltage bump. I was able to run 3.2 and 3.4 at 1.18Vc and 1.2Vq, now I'm running 3.8GHZ (201x19) at 1.23Vc and 1.2Vq. No idea how I can keep my Vq that low with a QPI of 7.2GHZ.

Here's some preliminary results, but I'm going to try force down voltages as much as possible next.

http://img179.imageshack.us/img179/783/68189055.jpg

Take this with a grain of salt though as I haven't checked it in a 12 hour benchmark yet which I usually do. Just seeing where I can go in terms of temps and volts at the moment.
 

Necrosaro420

Senior member
Apr 24, 2005
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Originally posted by: jandlecack
What's yours?

After my initial OC to see how far I could get with minimal voltage increase, I settled on 3.2 for a while, then 3.4, and now 3.8 with an insignificant voltage bump. I was able to run 3.2 and 3.4 at 1.18Vc and 1.2Vq, now I'm running 3.8GHZ (201x19) at 1.23Vc and 1.2Vq. No idea how I can keep my Vq that low with a QPI of 7.2GHZ.

Here's some preliminary results, but I'm going to try force down voltages as much as possible next.

http://img179.imageshack.us/img179/783/68189055.jpg

Take this with a grain of salt though as I haven't checked it in a 12 hour benchmark yet which I usually do. Just seeing where I can go in terms of temps and volts at the moment.

Are you getting this on air?
 

TurK-FX

Golden Member
Jan 25, 2009
1,022
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i am at 4.13 with 1.38V, everyday pushing little higher. Just finished the watercooling. But i am not using the computer yet till i get the video cards.
 

JAG87

Diamond Member
Jan 3, 2006
3,921
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4.2 daily, no HT. You will be surprised how far your chip can go with HT turned off, and how little HT does for you, unless you do a ton of multithreaded stuff like rendering and encoding.
 

AdamK47

Lifer
Oct 9, 1999
15,169
2,830
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I run my i7 920 at 21x180 (locked turbo mode) 24/7. I set it to that speed back in January and it's been 100% stable ever since. A base clock of 200MHz showed slight instability when gaming (particularly games with Unreal Engine 3), but could run Prime95 continuously without error.
 

jandlecack

Senior member
Apr 25, 2009
244
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Originally posted by: dmens
QPI of 7.2GHZ

friggin sweet!

Thanks :)

Yea I'm using air cooling. Will upgrade to water at some point in the future, but not anytime soon, as it's not vital to overclocking with these chips, since I'm not really intending 5GHZ.

Originally posted by: JAG87
4.2 daily, no HT. You will be surprised how far your chip can go with HT turned off, and how little HT does for you, unless you do a ton of multithreaded stuff like rendering and encoding.

Awesome. I have yet to try turning the HT off because I was quite happy with what I got so far, however, now I'm going to look into it.
 

VirtualLarry

No Lifer
Aug 25, 2001
56,227
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I guess I'm late to the party, I don't even have an i7 rig yet. I'm planning on skipping the 45nm i7 generation, and moving on to the 32nm, whenever that's released.
 

jandlecack

Senior member
Apr 25, 2009
244
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Originally posted by: VirtualLarry
I guess I'm late to the party, I don't even have an i7 rig yet. I'm planning on skipping the 45nm i7 generation, and moving on to the 32nm, whenever that's released.

The 32nm of the Core i5 series? Because I'm positive there are Core i7 32nm chips in the works that will run on 1366/x58.
 

aigomorla

CPU, Cases&Cooling Mod PC Gaming Mod Elite Member
Super Moderator
Sep 28, 2005
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Originally posted by: jandlecack
Originally posted by: VirtualLarry
I guess I'm late to the party, I don't even have an i7 rig yet. I'm planning on skipping the 45nm i7 generation, and moving on to the 32nm, whenever that's released.

The 32nm of the Core i5 series? Because I'm positive there are Core i7 32nm chips in the works that will run on 1366/x58.

no he's talking about the tock cycle on the bloomfield.

but like ive been telling everyone, dont hold your breathe because intel has been full of delays.

Like.... WHERE THE F IS MY i5 HTPC.
 

aigomorla

CPU, Cases&Cooling Mod PC Gaming Mod Elite Member
Super Moderator
Sep 28, 2005
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Originally posted by: jandlecack
The i7 is a tock...

no the current bloomfield is tick.

The Tock would be the 32nm bloomfield.

Like kentsfield 60nm was Tick.. and yorkfield was Tock.
 

Sureshot324

Diamond Member
Feb 4, 2003
3,370
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Originally posted by: jandlecack
Originally posted by: VirtualLarry
I guess I'm late to the party, I don't even have an i7 rig yet. I'm planning on skipping the 45nm i7 generation, and moving on to the 32nm, whenever that's released.

The 32nm of the Core i5 series? Because I'm positive there are Core i7 32nm chips in the works that will run on 1366/x58.

So is Intel abandoning socket 1366?
 

jandlecack

Senior member
Apr 25, 2009
244
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Originally posted by: Sureshot324
Originally posted by: jandlecack
Originally posted by: VirtualLarry
I guess I'm late to the party, I don't even have an i7 rig yet. I'm planning on skipping the 45nm i7 generation, and moving on to the 32nm, whenever that's released.

The 32nm of the Core i5 series? Because I'm positive there are Core i7 32nm chips in the works that will run on 1366/x58.

So is Intel abandoning socket 1366?
No...what gave you that idea?

Originally posted by: aigomorla
Originally posted by: jandlecack
The i7 is a tock...

no the current bloomfield is tick.

The Tock would be the 32nm bloomfield.

Like kentsfield 60nm was Tick.. and yorkfield was Tock.
No.

http://www.intel.com/technology/tick-tock/index.htm

For someone who runs so many i7 rigs, you're a bit misinformed. I like your anime taste though.
 

lopri

Elite Member
Jul 27, 2002
13,209
594
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I think this thread would make a good semi-database like thread if we post which motherboard, how much RAM, etc. for a 24/7 overclock. IMO, a lot of users here (including many lurkers) are interested in stable and easily maintainable overclocks instead of all-out-max overclock, and want to know what to expect.

OP: Very nice clock/voltage you've achieved. But I have an issue.

Originally posted by: jandlecack
After my initial OC to see how far I could get with minimal voltage increase, I settled on 3.2 for a while, then 3.4, and now 3.8 with an insignificant voltage bump. I was able to run 3.2 and 3.4 at 1.18Vc and 1.2Vq, now I'm running 3.8GHZ (201x19) at 1.23Vc and 1.2Vq.
Why skip 3.6GHz? ;)
 

jandlecack

Senior member
Apr 25, 2009
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Didn't really skip it, but results weren't that extraordinary. I needed the same bump in Vc that I needed for 3.8GHZ, being 1.22Vc at the lowest I currently found stable (Linx 20 runs and Prime95 for an hour).
 

2March

Member
Sep 29, 2001
135
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0
After testing this chip for a couple of months at fixed multipliers and Vc's I got it stable and cool at 3.366 GHz with the stock cooler. That's with 1.16 Vc and all else on auto. It will stay sort of below 70 degrees that way. But running the I7 without it's Speedstep and Turbo features did seemed kind of a waste to me. And I was holding back unknowing that ASUS Probe II was going nuts on Tcase so I spend a lot if time dealing with problems I never had...

A while ago I fitted the cooler in my sign and this got temps down and clocks up to 3.6GHz. This cooler can function under full load without fans up to about 3.6 without HT. Temps will stay below 70. Vc at 1.17-1.18V. After adding a 120mm and switching HT on temps were about the same but from then on I used only Tjunction because readings from Tcase started to behave stranger and stranger untill it made any conclusions impossible. I can still use it for fan control but that's about it. I also had to up Vc to 1.2V.

I have now switched Speedstep and Turbo on and and have experimented with Vc untill I got it stable at 1.24V. It needs more because it runs at 3.78GHz with turbo. It appears to regulate itself a bit because under full load it's 1.24 but it idles at 1.23. Temps at idle are below 40 running 2160MHz and 74 max under full load running 3780MHz. Under load I have never seen it drop below max speed so throttling is not a problem. I honestly can't think of a single reason why not to use these features. I have yet to see any problems with it. It's 24/7 stable this way but I only fire this system up when I need it.

I love this chip :)
 

TurK-FX

Golden Member
Jan 25, 2009
1,022
4
81
Him, i was worrying my temps were high.

My OC is 4.2 HT on or 4.3 HT off with 1.465V and only one core is 80C under full load while others around 70-71C

i made a benchmarking with 4.3 HT off and 4.2 HT on

3DMark Vantage score showed me HT off is just numbers on computer screen

4.3ghz HT off score was 19xxx cpu score
4.2ghz HT on score was almost 25xxx cpu score.
 

2March

Member
Sep 29, 2001
135
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0
Originally posted by: TurKFX
Him, i was worrying my temps were high.

My OC is 4.2 HT on or 4.3 HT off with 1.465V and only one core is 80C under full load while others around 70-71C

i made a benchmarking with 4.3 HT off and 4.2 HT on

3DMark Vantage score showed me HT off is just numbers on computer screen

4.3ghz HT off score was 19xxx cpu score
4.2ghz HT on score was almost 25xxx cpu score.

Do you have the same difference in temp when idle? And what program do you use to provide load? It could be the load is not spread over all cores.

3DMark won't show you anything. It's a synthetic bench. Whether hyperthreading provides more performance depends on the application you need it for. I use it for FSX because FSX loads all 4 cores but I run other apps to support it and it performs better that way. But when you don't use more then 4 cores it's no real use and a quite power hungry.

 

Sacraster

Senior member
May 31, 2001
880
0
76
seeing all those low vcore and high oc # make me really want to get a d0, my c0 is oc fine, but my vcore is no where near the d0.