Official OC3D Core i7 Overclocking thread

[monkey7]

My bet still is realtemp... which version do you use?

I had the same problem too at 3.8gHz. It looked all fine, even when running SuperPI 1m, but as soon as I started P95 - BSOD. In the end I had to add another 0.1v to my vCore to get it at 3.5.

 

[SwaleSmith]

Using version 2.70 thing I can't get my head around is for example whan my toasty GTX280 start to get worked they reach temps around 80C as they do, and they do feel hot, my cpu don't feel anywhere near as hot it really does feel like around 60c to me.

But I can't chance it without being sure obviously think I have a good chip to reach 3.8 on 1.32v odd but I personaly only take realtemp and the like with a pinch of salt, do they even officialy support i7 anyway???

I'm pretty confident it would make 3.9ghz atleast but it would more than likely need over 1.4v to be stable wich I beleive is ok for 45nm is it not, but for 100 or even 200 mhz its not worth it considering the voltage increase of about 0.1v.....but would love to try for the fun and benching if it was safe enough.

can't beleive how much better this is over my qx9770 and at half of todays price

My bet still is realtemp... which version do you use?

I had the same problem too at 3.8gHz. It looked all fine, even when running SuperPI 1m, but as soon as I started P95 - BSOD. In the end I had to add another 0.1v to my vCore to get it at 3.5.

 

[monkey7]

For the max. safe voltages you should take a look at this sheet (PDF). The voltage table is called 'table 2-6' and is displayed in chapter 2.10. vCore in relation to VSS (0) is on the first line, and the max. seems to be 1.55v. Wouldn't run on that 24/7 though *whistles*

 

[SwaleSmith]

1.55v sounds high for a 45nm however I feel /realtemp is indeed reading my temps accuratley then I would need WC to push for 4ghz stableas temps would be to hight to stress test safely.

But in all honesty I have had many WC systems and want the simple compactness my system offers with air so 3.8ghz is fine for me.

though think I will try a benchmark run of 4ghz or more for the fun

 

[SwaleSmith]

p.s have since minimized vcore to 1.30v seems stable but need to prime for a few hours to be sure. gonna spend more time finding my minimum stable. these chips are soo good but I must say I think my rampage II plays a big part in this it's such a good board.

 

[monkey7]

Yeah, it's probably the board that's holding my clock back at 3.7gHz... Not that I really mind though, it's prime stable and does everything I want it to.

1.30v... Darn I'm jealous Have to run at 1.3375 or something with 1.34 VTT to keep it at my current clock.

By the way: I disabled hyperthreading to increase performance in singletreaded games (FO3), really increases performance. Also took ~.5 seconds from my SuperPI 1M time. Is now 10.7s. Also, my cpu temp stays below 60 now when the window is open, causing the multiplier to stay at turbo (21x), allowing me to run P95 at 3.885gHz.

 

[SwaleSmith]

still playing, and have gotton to 3910.66ghz with 1.2750 vcore prime stable 1 hour so far ......

reaching 81C apparently this is normal when overclocked!!!!

just can't seem to get it to 4ghz with sensible volts tried 1.35 and still crashes 20 seconds into prime stress test, too scared to add any more volts for 4ghz I think I'll be looking at 90C :-(

 

[monkey7]

You are reaching 81 degrees @ 1.2750? :| Are you sure you mounted your cooler correctly? (yes you are, but I'm asking anyway).

I'm staying just below sixty with my current ambient, folding with the SMP client 100% load. Turbo is still enabled despite all four cores being burned. Wasn't turbo supposed to be turned off when two or more cores were seriously loaded?

 

[SwaleSmith]

You are reaching 81 degrees @ 1.2750? :| Are you sure you mounted your cooler correctly? (yes you are, but I'm asking anyway).

I'm staying just below sixty with my current ambient, folding with the SMP client 100% load. Turbo is still enabled despite all four cores being burned. Wasn't turbo supposed to be turned off when two or more cores were seriously loaded?

pretty sure it is mounted perfect, temps idle are 46c are you sure realtemp is correct my mboard says nowhere near this???

p.s this is prime 95 running 8 threads @100% heat stress etc have you tried prime 95 on small fft's? Could you try for me to see what your temps are, apparently 80c is fairly normal overclocked but given the volts I too feel it's a tad on the high side but I think you'll find that small fft's really really ramps up your temps big time....scroll down to near the bottom where it says ''Setup Instructions for New Users'' pick your version from within the text

Prime Link

http://www.mersenne.org/freesoft/

 

[monkey7]

No, I cannot be 100% sure that RealTemp is right. I downloaded the newest version (2.88) and CoreTemp, they both indicate a tad higher than RealTemp 2.70.

And yes, I have seen a lot of clocks running at 80C, also around 4gHz. So in that field, you're not doing bad at all

P95 blend for 16 hours hit a max. of 66C here. Currently folding at 54/57/55/54.

 

[SwaleSmith]

No, I cannot be 100% sure that RealTemp is right. I downloaded the newest version (2.88) and CoreTemp, they both indicate a tad higher than RealTemp 2.70.

And yes, I have seen a lot of clocks running at 80C, also around 4gHz. So in that field, you're not doing bad at all

P95 blend for 16 hours hit a max. of 66C here. Currently folding at 54/57/55/54.

can't work it out how come your temps are so low surely the noctua can't be that much better than a my asus triton 81 and you running more volts!!!!

 

[SwaleSmith]

have now further tweaked and reduced my volts sticking to 3.8ghz and am 9 hour prime stable @1.250 vcore!!!! temps now @ 41 idle and 74c max load small fft's for maximum heat power and stress etc running 8 stress threads !!!!

very impressed!!!

 

[monkey7]

I'm jealous Have to put it to 1.35v @ 3.7gHz to make two F@H SMP and one F@H gpu client make 100% über stable.

Congratz on your overclock Are you going to try and get it at 4.0?

 

[SwaleSmith]

Would need about 1.4v I reckon 3.8/3.9 is about the max have not persued more as i'd rathere run the lower safer and cooler voltage with a cost of 200mhz.

I would try it but would need better cooling it most likely hit 90c with 1.4v

 

[monkey7]

Hmm 1.4v probably is probably not a good idea, and 90C isn't for sure. I'd stick with those 200 mHz less then

 

[SwaleSmith]

Ok so heres my final overclock.

Rampage II X58 core i7 920 @3.8ghz 1.2500vcore.

Noctua cpu cooler (Nice Review Monkey7 ) 70c Prime small fft's max Load

36c Idle

Prime stable evidence below note the temp was when I was useing my ASUS triton 81 cooler therfore slightly hotter than my new noctua.

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[SwaleSmith]

Post your Core i7 OC's here!

Keep the format as below:

Make sure you include whether it was stable or not (with evidence - Prime95, Super PI 32m, F@H etc) and a CPU-z validation link.

Suicide shot

Stable

Stable with evidence

Example:

[B]The Core i7 Extreme 940 (stock 2.94GHz)[/B]

Jim:

[COLOR="Blue"]Core i7 EX 940: 7GHz (319 x 22) @ 1.0vcore, 1.1v FSB,  ASUS Rampage II Extreme[/COLOR] Custom SS (Phase change)

Core i7 920 retail:

Mopnkey7

Core i7 920 retail: 3.80GHz (190*20) @ 1.3625 vCore, Gigabyte X58-UD5, Air cooled Noctua U12P SE1366

SuperPI time 11.000s, BSOD as soon as P95 started. No proof, as I lost the screenshots with the reinstallation of Vista.

Am i reading this right....7ghz with 1.0v vcore & stable!!!!! f'ing hell nice phase overclock jim!!!

what 3dm06 score do you get lol 35k

 

[SwaleSmith]

I have been doing some tweaking with my WC and have now reached 4.1ghz 24/7 stable

with 1.45 20x multi 205 bclk.

seems to have really given me a suprising boost in games wich are more cpu intensive FSX is flying now literaly

 

[filthy]

Have you visited the AMD site where they are demonstrating teh Dragon stuff. They have some videos on the site and one shows them with a liquid helium cooled phenom o/c to 6GHz giving a 3dmark score of 45,000! Check it out.

 

[Ghaz]

I'm trying to get this to 4GHz on air. Will be lapping my processor and my heatsink soon, so hopefully I will get there, as I am only 110MHz off