E6750 + Tuniq Tower 120 - running too hot? New Tjunction.

[Pride]

Just few days ago got my E6750 + Tuniq Tower 120 + Gigabyte GA-P35C-DS3R + Antec p182b.

E6750 is G0 and Tjunction is 100C' instead of 85C'. Does this mean I can "safely" push my E6750 to 75C' which would be "old 60C'"? Intel did raise the Tjunction for a reason, didn't they?

Im currently running 450x8 = 3.6GHz. Idle temps are around 52-54C' and after night of Prime95 torture test around 78C'. Vcore is 1.3875V. System seems stable this far, but no idea what happens in month or few when some dust accumulates on Tuniq / rest of the system.

Should I be worried or is it all good?

I thought it's the stability that matters really, not temperature? If it'd be too hot, it'd simply crash/BSoD, riiight? Kinda nawb at OCing...

New info in the end of this thread!

Built the system from scratch now. Temps are now much lower (66C' peak at 1.4V)

 

[Pride]

...actually I think Vcore is 1.3825V, but that doesn't matter too much.

Kinda pathetic results with 4x 1GB Crucial BallistiX PC2-6400 though. Running those on 2.2V, but even with 5-5-5-15 Im not getting to even Windows if I try running these with the 2.4 multiplier with 440 FSB (1056MHz). Also tried 7x500 (NB and FSB +0.1V) but that didn't even POST (well dualbooted and reseted BIOS settings). As Im running FSB 450 now, those RAMs are 4-4-4-12 @ 900MHz, guess that's not that much worse than 5-5-5-15 @ 1000MHz?

Anyways, is it safe to push NB voltage higher than 0.1V with GA-P35C-DS3R?

 

[Pride]

Noticed that Coretemp v0.95.4 peaked at 81C' after 35 minutes of running. Still stable though. Self-Test 1024k.

 

[mrfatboy]

Originally posted by: Pride
Noticed that Coretemp v0.95.4 peaked at 81C' after 35 minutes of running. Still stable though. Self-Test 1024k.

You are running way to hot! You need to look at 6750 OC thread that I started.

 

[Pride]

Well, at morning other thread had failed due to a rounding error. Lowered voltages and back to FSB 440.

I still can't understand what's wrong with the temps, I mean what on earth can I do to get them down?

 

[Yanagi]

what kind of cooling are you using?

 

[mrfatboy]

It sounds like your tuniq was mounted improperly. remount it. Or you used too much paste.

 

[ty1er]

What are your ambient temps?

 

[Pride]

Tuniq Tower 120

Case: Antec p182b with 3+1 120mm fans.

Temps lowered quite a lot when I simply opened the door of the case. This case seriously sucks for overclocking. It's SO CRAMPED. I think you can't even fit 8800 GTX/Ultra in here. 28.5cm from back plates to upper HDD rack.

Im running it now on FSB 440. Vcore 1.3625V. DDR 2.2V (Crucial Ballistix PC-6400 4-4-4-12). Rest of the voltages are stock.

Idle temp is 44-45C' and full burn peaks at 68C'.

Thing is, I bought motherboard + processor + cooler + casing + PSU together. They built it (for free). Just added HDDs, GPU and sound card.

I've never attached cooler to a processor myself, I've always got a deal like that. Afraid to touch it.

Yeah, it might be that they haven't properly mounted it / pasted.

 

[Pride]

Originally posted by: ty1er
What are your ambient temps?

Ambient: 23-26C' (room temp, riiight?)

 

[SerpentRoyal]

Idle should be 40 to 45C per Coretemp 0.95.4. Tjunction for that chip should be 85C. Above 65C is TOO HOT! Retest outside the case. Suspect the root cause of problem is pooly seated CPU cooler. Make sure the heat spreader and CPU base are flat. Clean both surfaces with alcohol and use new grease.

 

[Pride]

Originally posted by: SerpentRoyal
Idle should be 40 to 45C per Coretemp 0.95.4. Tjunction for that chip should be 85C. Above 65C is TOO HOT! Retest outside the case. Suspect the root cause of problem is pooly seated CPU cooler. Make sure the heat spreader and CPU base are flat. Clean both surfaces with alcohol and use new grease.

Nope, Tjunction is supposed to be 100C' for G0-stepping E6750. That I do know.

And that means that G0-ones can, in theory, take +15C' temperatures.

Anyways, the system is now perfectly stable. Only problem is the fact that my new soundcard, Auzentech Prelude doesn't work that well (yet) with Windows Vista...

 

[mrfatboy]

There has been alot of confusion about what Tjunction is on this forum. I believe Coretemp started the confusion. It incorrectly labels Tjunction MAX as Tjunction.

The "Tjunction MAX" is supposed to be 100C for the G0's (your 6750). This is not a variable.

The "Tjunction" is 85C for the G0's. This is a variable.



The bottomline is that you should be in the Mid 30'sC with that cooler and that ambient. You either have a poorly seated cooler or your case has terrible air circulation.

 

[The-Noid]

If it is stable who cares.

Also Core temp is right. It should be tCASEMAX though and not Tjunction. But who cares if it displays the correct temperatures?

All you need to look at is the degrees to throttle.

 

[imported_i2k]

I have idle temps of 29C with a Q6600 and that Tuniq Cooler.
Did you apply arctic silver 5? And did you apply according to instructions on their site?

 

[Pride]

Originally posted by: i2k
I have idle temps of 29C with a Q6600 and that Tuniq Cooler.
Did you apply arctic silver 5? And did you apply according to instructions on their site?

As said my computer was prebuilt (motherboard+processor+cooler+casing). So I didn't attach the Tuniq Tower myself. Although I've been messing around with PCs since 386's, I've never attached a cooler, believe or not!

I guess I should re-attach the cooler then, although I don't find idle 45C' and burn temps less than 70C' scary at all (with 32% overclocks). I'll probably try re-attaching if my system gets unstable, which I highly doubt.

btw, can I use any clear spirit as alcohol or does it need to be pure 97%?

 

[Pride]

Update.

FSB 440 (x8).
Vcore 1.3625V
DIMM 2.2V (Crucial Ballistix normal voltage)
MCH and FSB normal.

Core temps in idle 44-46C'. 66-68 in burn. Stable.

 

[bryanW1995]

def too hot. I'm at 52c at 100 % load on both cores at 3.6, 1.53 vcore actual using my tuniq and an antec 900. cpu fan speed is 1200 rpm.

 

[Pride]

I still dont understand what the temps matter as long as it's stable.

 

[Fayd]

Originally posted by: Pride
I still dont understand what the temps matter as long as it's stable.

it can be stable and reducing lifespan by overly high temperature at the same time...

 

[mrfatboy]

Originally posted by: Pride
I still dont understand what the temps matter as long as it's stable.

lower temps allow you to OC more.

 

[Quiksilver]

Originally posted by: mrfatboy

Originally posted by: Pride
I still dont understand what the temps matter as long as it's stable.

lower temps allow you to OC more.

and usually means your processor will last longer compared to one that runs hotter.

 

[Pride]

Well, that's true, but lets say a processor can last... 1000 years with normal temps (55C') . And half of that with 65C' - and half of that in 75C' - and half of that in 85C'.

 

[bryanW1995]

it is was actually 1000 years mtbf at 55, then 1/2 at 65, then 1/2 again at 75, then we wouldn't be talking right now. It's probably more like 10 yrs mtbf at 35c, 7-8 yrs under normal use around 40-45c, then goes down pretty quickly from there. That's the argument for going crazy on voltages. I can run mine at 1.64 vcore, but it might not last more than a few weeks. Is that worth it to run at 3.7 ghz? Not in my opinion. You have a SERIOUS problem if you are getting 81c temps ever on your cpu. Fortunately, the problem is easy to fix by reseating the hsf and reapplying as5 or (insert name of thermal grease of choice here). I am MUCH running higher vcore than you even though I'm only at 3.5. Based on what many others who are more knowledgeable about this subject than I am have said, .15vcore increase should have a MUCH greater impact on temps than 100 mhz. You should not go over 50c running prime 95 with that setup.

 

[Pride]

Time to update.

Noticed that it was hell to try running OCed system with 4x 1GB Ballistix. Although Prime gave no errors, there were some randoms BSoDs, hanging, error messages etc.

Well, anyways, currently running with 2x 1GB sticks (870MHz / 4-4-4-12). FSB reasonable 435 (3.48GHz), Vcore 1.375V, +0.1 GCH. Temps in burn 62-64C'. Hopefully get the RAM running with 2.4 multiplier instead of 2.0. Ill keep you peeps posted.