Core i7/X58 Overclocking Thread

[Splave]

raise your qpi/vtt a couple bumps as well as pll

[Aberration]

Thanks.

[Nilos]

Metroid and DJ88 what are your batchnumbers plz?

[Splave]

nilos go back like 4 pages they already posted them

[sinister1st]

Download the latest Realtemp program and you are going to be very surprised.

Right on guys I finished my 24/7 crunch system:

Air Cooling True Copper lapped:

First lets see 4.0Ghz 8 threads ran for almost 20 minutes maximum 88c.



4Ghz 20 Minutes 8 threads =

Maximum: 88c
Average Maximum: 85c




3.7Ghz 8 threads 7 Hours Prime 95 =

Maximum: 73c
Average Maximum: 72
Load minimum and maximum average: 2 hours = 540 / 8 = 67.5

3.8Ghz should be a little higher.

4Ghz to 4.2Ghz means:

200Mhz x 8 cores = 1600Mhz which is converted into heat into heat.

So it looks like is a general problem for aircooling users, this chip is too hot. The only way to get 4.2 Ghz to work with 8 threads is with a good watercooling.

By the way 1 fan 1300RPM 54CFM for me is better than 2 fans as the latter was explained.

This was an interesting week,

Thank you all who participated and contributed to this thread. This is a very good thread explaining many things about this amazing processor.

Well I will keep at 3.717Mhz 1.168V 24/7 8 threads mainly because my goal was to keep 4 to 6 logical processors for the World Community Grid xtremesystems team.

I will only use 4.2Ghz if I need to bench for any reason or if a game does not run at 60 frames per second and the same needs a CPU boost or to play the best Playstation 2 emulator PCSX2 at amazing frame rates which is a CPU eater.

I spent all my money building this system which I do not regret at all however if I only knew the best aircooling solution would not stand for 4.2Ghz then I would have built a water cooling solution. Well there are things we can not go back in the past. It was done and was for good.

I will change to water cooling in the next few months and keep at 4.2 Ghz 8 threads. I still think it is possible to keep such speed with a good water cooling solution. There are good radiators out there in the market.

The CPU-Z Validation: 3.7Ghz 8 threads 1.168

Nice 24-7 for me looks like 3.7- 3.8 is perfect for air 24-7 without stock heat sink. I need better cooling load temps are to high for 24-7 @4g , my load temps were way to high so i did a nice prime at moderate 3.3 27 hrs I dont like seeing it that high of a load temp. Love these new chips I especially love the 4 cores 8 threads. Im waiting for the next round of heat sinks

[003]

On the stock cooler of the 920, I was able to boot up windows and get a cpu-z validated shot of 4GHz. All I did was set the bclock to 211 * 19, the vcore to 1.325v, vpll to 1.9v, and the memory, qpi and uncore multipliers to lowest. Again this is all on stock cooling.

Is that at all impressive or noteworthy compared to others? It was not prime stable, the system froze shortly after starting prime. However I can get 3.8GHz prime stable, haven't tried 3.9ghz. For the third and final time, this is all stock cooling and 2min in the BIOS. Temps have hit 100C with this configuration.

Once DD gets me my new top for my MPC-X38 and D-Tek gets the mounting kit for the Fuzion V2, I will be putting the CPU and chipset under water. About what can I expect with water cooling based on what I've done on stock?

EDIT:
Forgot to mention, turbo mode is disabled for all of this.

[roller11]

Just Got my i7 920 running, here are the results
GA-x58 ud5
920 C0 rev, F4i bios
hyperthreading off
Patriot 999 DDR3, 3x2GB
Tuniq tower 120




I sort of cheated in that I benched with HT off, but that is no good for normal everyday use. Reason is Vista sleep mode doesn't work if HT is disabled. Struggling with this reminded me of the bad old days of XP with it's 90 second boot times. With vista, 10 sec is the norm, so HT on is a must.

[dj883u2]

Metroid and DJ88 what are your batchnumbers plz?

Batch: 3837B080

[dj883u2]

Let it priming. Have you tried 1.10V 8 Threads 3.7Ghz

My case is, it boots at 4.0Ghz 1.18V 21x191 = 4.009 Mhz then it freezes after 30 minutes priming.

No problem.

Prime 95 - 3705Mhz - V.core 1.088v:



By

[icecold316]

Just Got my i7 920 running, here are the results
GA-x58 ud5
920 C0 rev, F4i bios
hyperthreading off
Patriot 999 DDR3, 3x2GB
Tuniq tower 120

I sort of cheated in that I benched with HT off, but that is no good for normal everyday use. Reason is Vista sleep mode doesn't work if HT is disabled. Struggling with this reminded me of the bad old days of XP with it's 90 second boot times. With vista, 10 sec is the norm, so HT on is a must.

I got the same Config, except my ram is corsair dominator.

How did u get Tuniq Tower 120 to work on i7. Any pics ?

[X.T.R.E.M.E_ICE]

lol why search google, when the official real temp thread is here?

LOL nicely updated. where is 2.90

Last edited by unclewebb; 11-23-2008 at 05:33 PM

[dejanh]

No luck for me using R2E with a Core i7 940. I already tried two CPUs and the highest rock solid stable I can get is 3.8GHz (19x200MHz) with 1.28V in BIOS, QPI/DRAM voltage is at 1.43750 in BIOS. Ram is Corsair Dominator 1600 @ 1600MHz with 7-8-7-22 timings at 1.65V in BIOS. Air cooling with CoolerMaster V8.

I do not know how everyone is managing 4GHz OCs even with 920 when I cannot even get any of the 940s to 4GHz. Maybe it's my cooling? Temps are maxing out at 77C (ambient is about 22C).

This is starting to suck badly...why pay for a 940 when it works no better than any 920 out there...

Any others users with R2E and a 920/940 on air to give some tips on breaking that damned 4GHz mark? These chips are supposed to be higher binned than 920s but maybe w/out WC or something better they cannot fully stretch their legs?

Any tips appreciated!

[unclewebb]

RealTemp beta link:

http://www.fileden.com/files/2008/3/...alTempBeta.zip

Save that link. It hasn't changed for months.
It's winter time here so there has been lots of time for updates recently.

[Hornet331]

LOL nicely updated. where is 2.90

maybe scroll down some posts.

aww, unclewebb already posted it.

[Splave]

No luck for me using R2E with a Core i7 940. I already tried two CPUs and the highest rock solid stable I can get is 3.8GHz (19x200MHz) with 1.28V in BIOS, QPI/DRAM voltage is at 1.43750 in BIOS. Ram is Corsair Dominator 1600 @ 1600MHz with 7-8-7-22 timings at 1.65V in BIOS. Air cooling with CoolerMaster V8.

I do not know how everyone is managing 4GHz OCs even with 920 when I cannot even get any of the 940s to 4GHz. Maybe it's my cooling? Temps are maxing out at 77C (ambient is about 22C).

This is starting to suck badly...why pay for a 940 when it works no better than any 920 out there...

Any others users with R2E and a 920/940 on air to give some tips on breaking that damned 4GHz mark? These chips are supposed to be higher binned than 920s but maybe w/out WC or something better they cannot fully stretch their legs?

Any tips appreciated!

higher vcore brah 77c is nothing with these. 1.28 just isnt enough unless you have 1 of the 2 cherry i920 floating around here. Loosen the ram up for now too 9-8-8-24

[Hot'n'Chilly]

Why would loosening up your ram timings help? I always thought that tighter ram timings were a good thing....

[Splave]

Why would loosening up your ram timings help? I always thought that tighter ram timings were a good thing....

Loosen them up to rule them out as whats holding you back

[Lukee]

No luck for me using R2E with a Core i7 940. I already tried two CPUs and the highest rock solid stable I can get is 3.8GHz (19x200MHz) with 1.28V in BIOS, QPI/DRAM voltage is at 1.43750 in BIOS. Ram is Corsair Dominator 1600 @ 1600MHz with 7-8-7-22 timings at 1.65V in BIOS. Air cooling with CoolerMaster V8.

I do not know how everyone is managing 4GHz OCs even with 920 when I cannot even get any of the 940s to 4GHz. Maybe it's my cooling? Temps are maxing out at 77C (ambient is about 22C).

This is starting to suck badly...why pay for a 940 when it works no better than any 920 out there...

Any others users with R2E and a 920/940 on air to give some tips on breaking that damned 4GHz mark? These chips are supposed to be higher binned than 920s but maybe w/out WC or something better they cannot fully stretch their legs?

Any tips appreciated!

I've been having the same problem. I've managed to get (197 x 21) a lot more stable than the other ones. It seems that for me that 200+ BCLK isn't working, so I'm ok with 4.137 GHz at 1.344(1.3875 in bios)

I'll experiment a bit more and see if I can get anything stable at 200+ BCLK

[X.T.R.E.M.E_ICE]

RealTemp beta link:

http://www.fileden.com/files/2008/3/...alTempBeta.zip

Save that link. It hasn't changed for months.
It's winter time here so there has been lots of time for updates recently.

Thanks but i downloaded it yesterday.

[Metroid]

looks very good, 3.7ghz with 8 threads and only 70°C under prime is awesome.

Maybe you could try 3.8ghz, since the WCG WUs usually produce much less heat then prime.

btw. why do you run the NB only with the 16x multi?

Thanks,

Well to tell you the truth. I found out if you feed it with 13 to 16x then my system will boot with low voltage and it is more stable. I know it is strange. The memory has to be 6x and Uncore 13 to 16x. If the memory is x8 then the Uncore should be 17 to 20x.

I hope this info will help you guys out on the quest of getting a very good lower voltage with higher clocks.

[003]

On the stock cooler of the 920, I was able to boot up windows and get a cpu-z validated shot of 4GHz. All I did was set the bclock to 211 * 19, the vcore to 1.325v, vpll to 1.9v, and the memory, qpi and uncore multipliers to lowest. Again this is all on stock cooling.

Is that at all impressive or noteworthy compared to others? It was not prime stable, the system froze shortly after starting prime. However I can get 3.8GHz prime stable, haven't tried 3.9ghz. For the third and final time, this is all stock cooling and 2min in the BIOS. Temps have hit 100C with this configuration.

Once DD gets me my new top for my MPC-X38 and D-Tek gets the mounting kit for the Fuzion V2, I will be putting the CPU and chipset under water. About what can I expect with water cooling based on what I've done on stock?

EDIT:
Forgot to mention, turbo mode is disabled for all of this.

Aww come on, no input on this? Please humor me or at least give some pointers... I'm really just trying to keep myself occupied until I can get the darn thing under water!

[Metroid]

Aww come on, no input on this? Please humor me or at least give some pointers... I'm really just trying to keep myself occupied until I can get the darn thing under water!

I'm too busy trying to lower my voltage like that world record 3.7Ghz 1.10V 20 minutes primed. I need to do the same

I will come back to report.

[roller11]

I got the same Config, except my ram is corsair dominator.

How did u get Tuniq Tower 120 to work on i7. Any pics ?

No pics, I'm using the gravity method right now. That is, I set my case down flat on it's side and the HS is just sitting on the top of the 920 with some light bracing. Tomorrow, I'm going to make a proper hold down by screwing down a piece of sheet metal to each end of stock 'H' hold down to effectively enlage it so that it extends beyond the mobo holes. With holes drilled in the sheetmetal aligned to the holes in the mobo, I'll run the stock screws down into a custom backplate. This will allow me to turn the case up onto it's normal upright position...at least in theory.

[dejanh]

higher vcore brah 77c is nothing with these. 1.28 just isnt enough unless you have 1 of the 2 cherry i920 floating around here. Loosen the ram up for now too 9-8-8-24

Yeah, well, isn't max temp 100C? 77C is not that far off and with extra voltage that heat goes up pretty darn quick. Also, just cranking up the volts on Core i7 is not enough...all of that other QPI/Uncore junk goes into play as well, no to mention the mass of multipliers business, etc.

I do always loosen up the timings when trying to OC to factor out the ram. Thanks for the tip though

Looking for more now!

I've been having the same problem. I've managed to get (197 x 21) a lot more stable than the other ones. It seems that for me that 200+ BCLK isn't working, so I'm ok with 4.137 GHz at 1.344(1.3875 in bios)

I'll experiment a bit more and see if I can get anything stable at 200+ BCLK

Are you on air or water?

[Metroid]

No problem.

Prime 95 - 3705Mhz - V.core 1.088v:



By

You have a freak CPU

It boots with 1.10V no problems run some programs.

The maximum I could get stable with 3.7Ghz 8 threads at 1.14V. You still have a difference of 3 to 5 volts which has a better yield than my chip

Congratz,