High vcore i7 Megahalem/TRUE Owners

fiskov · 10-24-2009, 10:22 AM

Basically i'm pushing my old c0 i7 920 to the max (24/7) till i switch to i9 in March/April.

I've been using an Akasa Nero since i got the i7 a yr ago at:
4ghz (191x21) 1.46v, two 70cfm fans (push-pull).
Idles 40's
loads 95's

I've discovered just recently i can get it to 4137 (197x21) but to do this i'm requiring 1.51v and my poor old Akasa Nero just can't handle it..

So my question to you Megahalem/TRUE Owners is;
Anyone else using this level of RIDICULOUS voltage, cause i would love to know the temps, or even if the cooler can handle it at all?

I really don't want to switch to Water as i don't trust the concept of it.

Andrea deluxe · 10-24-2009, 11:25 AM

true black + push pull of enermax magma and solve it

my voltage is 1.232v oc 4ghz.

max temp on core is 75-80° but is a d0.

fiskov · 10-24-2009, 11:31 AM

That's all well and good, but some temps and voltages would be nice..

jfromeo · 10-24-2009, 11:58 AM

1.50v 24/7 on air cooling is way too much for even a lapped, pressure-modded TRUE Copper + 2x120x120x38 high cfm fans.

You'll see electromigration/degradation issues in a week at most.

fiskov · 10-24-2009, 12:28 PM

doesn't matter i'm getting i9 in March/April.
I''ve been running 1.46v for over a yr now without any issues/trouble so i doubt its going to do much more..

If either of these heatsinks can hold 90-95 degrees @ 1.50v i'd be happy with that!

Kain XS · 10-24-2009, 05:21 PM

Certainly I wouldn´t recommend more than 1.45v and preferably 1.4v for 24/7.

You will have lower temps of course but I can´t think that being good enough.

PaRn ssR · 10-24-2009, 10:59 PM

Prolimatech Megashadow

cirthix · 10-25-2009, 12:31 AM

I've been playing around with a megahalem on a 975xe this week. 1.4v at around 4.3GHz hits 85C (realtemp) using intelburntool. At that point, the system is less stable given more voltage because of the high temps.

fan=120mm at ~2500rpm.

fiskov · 10-25-2009, 05:31 AM

Quote:

Originally Posted by cirthix

I've been playing around with a megahalem on a 975xe this week. 1.4v at around 4.3GHz hits 85C (realtemp) using intelburntool. At that point, the system is less stable given more voltage because of the high temps.

fan=120mm at ~2500rpm.

Thankyou! that's what i was after.

"Cirthix" Is that just one fan? And inside a case?

It looks like it might be close, my CPU load is never over 85% normally so hopefully (taking your results) it will be around 90-95 degree mark for me.

cirthix · 10-25-2009, 01:55 PM

No case, air conditioned room (~77f), one fan. Fan is a 1.3A 38mm thick one, don't remember exactly which. TIM=ceramique.

64dragon · 10-25-2009, 03:54 PM

why are you trying to push for the extra 137mhz if your load is never over 85%? seems like a waste of money to get a new heatsink that may or may not help you,the fact that your running the chip at 95C is absurd IMHO. are you trying to cook food with your computer? i don't have an i7 but i've never seen my x3330 over 50C at load at 3.8ghz running Orthos.

fiskov · 10-25-2009, 06:03 PM

Quote:

Originally Posted by 64dragon

why are you trying to push for the extra 137mhz if your load is never over 85%? seems like a waste of money to get a new heatsink that may or may not help you,the fact that your running the chip at 95C is absurd IMHO. are you trying to cook food with your computer? i don't have an i7 but i've never seen my x3330 over 50C at load at 3.8ghz running Orthos.

Dunno tbh, if it can be done.. why not?
Normally i get the CPU bellow the extreme edition, but went for a i7 920 instead of the 940.
As mines a terrible c0 and i'm getting i9.. I cannot honestly care if it goes bang.

Anyway, cheers "cirthix" just ordered one, and two Yate Loon D12SH-12 2200RPM fans. (88cfm) Oh, and some AS5 of course.
Lets see if it does the job.

jcool · 10-25-2009, 07:22 PM

Dude, you need water.. or a better CPU xD
I9 is a long way off, even if some people already have some

flak-spammer · 10-25-2009, 07:39 PM

Two yate high speeds aren't going to hold up to that load. You will need 38mm fans Panaflos or Delta or something.

Carfax · 10-29-2009, 05:24 PM

I have a D0 chip sitting at 4ghz, with 1.36v LLC disabled (1.28v on load). Max temps are usually around 75c with my Megahalems, with spikes up to 78c, but it doesn't linger there very long.

I just ordered 2 Noctua NF-P12 fans though, which I hope will reduce temps closer to 70c, which means I can lower the voltage a bit more.

If you got a Megahalems, you probably wouldn't need that much voltage, and your load temps would drop by 10 degrees I'd wager..

95c on load is insane!

cirthix · 10-29-2009, 06:15 PM

I don't recommend it either, I was just giving him the info he wanted. My test was done specifically to load the vcore regulator as hard as it could be without crashing intelburntool, not something I'd run every day.

Mescalamba · 10-31-2009, 07:50 AM

I think that thread writer just need to "level up" to liquid cooling.

This is bit too much for air cooling.. at least conventional.

fiskov · 11-03-2009, 12:59 PM

Long time since reply due to illness.
But a little update..
The Megahalem temps are about 5-7 degrees less than my old Akasa Nero, which is pretty good!
At the moment i'm using 194x21 / 4075mhz @ 1.49v
temps are around 95 again.

I'll keep pushing come the weekend.

cirthix · 11-03-2009, 01:03 PM

sorry, but that is retarded. drop your voltage to something around 1.35 and you'll get a better overclock. voltage isn't limiting you right now, it's the core temperature.

Computurd · 11-03-2009, 02:19 PM

I have ran some high temps with my CO when i was first playing with it and a copper true, but no where near those volts! IF it is taking you 1.49v to get to 4.1 then you have a really sorry chip, even for a CO. I agree with cirthrix, you should lower your vcore, you push it too high you are gonna be unstable just because of over-voltage. Somewhere along the lines your OC on that chip must be being affected by something else like yer pll or NB volts. if you tweak those, it will probably help. I have a hard time seeing that your oc is very good at all with those volts.

fiskov · 11-04-2009, 09:01 AM

It's just a terrible c0.
It's not like i run 100% usage 95 degrees all the time.
Its usually 85% usage MAX 85-90 degrees.

Like i said i don't mind if it goes bang (i'd just perfer it doesn't take out the mobo in the process).

lkiller123 · 11-04-2009, 04:01 PM

Are you serious? 95 degrees is insane. Either lower your voltage or don't push your clock speed this far, it's ridiculous.

Mescalamba · 11-07-2009, 08:31 AM

Its not that "insane" .. its just "not recommanded".

I have Megashadow now (nickel-plated Megahalem) - 69°C - 1.31V - hottest core .. at OCCT it reached max 72°C I think.. yea and HT enabled.

So, yes its ok, but not much better than Xigmatek Thor´s Hammer (3°C difference? ergh)

I can test 4GHz at your setting later.

Carfax · 11-08-2009, 12:37 AM

Quote:

Originally Posted by Mescalamba

Its not that "insane" .. its just "not recommanded".

I have Megashadow now (nickel-plated Megahalem) - 69°C - 1.31V - hottest core .. at OCCT it reached max 72°C I think.. yea and HT enabled.

So, yes its ok, but not much better than Xigmatek Thor´s Hammer (3°C difference? ergh)

I can test 4GHz at your setting later.

I added a second Scythe Kaze-Jyumi fan to my Megahalems and now my max temp is 74c @ 4ghz where before it was 78/79c.

The noise is killing me though! I also tried 2 Noctua NF-P12 fans in push pull config and although they were virtually silent, my temps climbed to 83c under full load, so I took them off.

Might put them back on again though, because the noise with the 2 Scythes is annoying me.

Mescalamba · 11-08-2009, 04:36 AM

Soo.. OCCT says 75°C top.. which ain´t bad, plus its very unlikely to reach that load in normal circumstances - Megashadow with 2x Yate Loon 120mm - 1300 RPM .. its almost whisper silent + Coolaboratory Liquid pad as TIM.

Btw. Megashadow or Megahalem don´t profit much from higher RPM fans, thats more TRUE part, which can benefit from higher RPM (eg. higher CFM).

Hmps, I can make 4GHz stable.. not bad.