P5B Deluxe+C2D 6600 temperature problems please help

tipes · 12 Nov 2006 at 10:46

Hi all,

Problem summary:-

Just built this rig and it seems ok but i am worried about temperatures when o/c - not too heavy ie 375x8 3gig. during running orthos temperature rises from idle of 32 to 60 very rapidly.The weird thing is that if i feel my heatsink and northbridge etc they are very cool.Btw i am using coretemp to read temps. I also briefly tried 400x8 but temps during orthos were 76 !! only ran for a couple of minutes at most - almost **** myself.

Remedies tried so far:-

Have lapped the heatsink & re applied artic silver paste(old original artic silver tho).

Have two 120mm case fans one blowing in at the front & one exhausting at rear of case, running cpu fan at max.

I am concerned that surely if temps are being shown of 60 during testing you would have thought that the heatsink on the cpu would be hotter showing that it is doing it's job?

Could i have misleading temperatures being shown? using Intels Tat the temps shown are higher still !!

I would appreciate anybody's help on this as it is worrying - i dare not try to go any higher until i get this sorted. Any ideas peeps?

Thanks for your help

Mark

FreeStream · 12 Nov 2006 at 11:56

What cooler?

Is the IHS on the CPU flat? (Metal cover bit - most conroes are concave) do a razor test to find out.

Update to the latest BIOS and try 400x7 (2.8ghz) at 1.25V.

Or try lowering voltage at 400x8, try 1.35V for a start.

Its_Me · 12 Nov 2006 at 13:18

see my post with regards to the temps on ASUS probe
http://forums.overclockers.co.uk/showthread.php?t=17651120

tipes · 12 Nov 2006 at 18:13

Hi Concorde & it's me,

Just to confirm the cooler i am using is the Zalman CNPS8000. I take it that you mean the load plate - is this the IHS? I am running the latest bios version 804. I will try your other suggestions - but i still find it weird that the heatsink does not get hardly hot at all despite the apparent high temps. Will try the suggestions & get back to you.

I am using core temp to read the temperatures and not Asus probe.

Many thanks for your input guys.

Mark

trojan698 · 12 Nov 2006 at 18:30

The heatsink should be hot, thats the sign that its disipating heat properly. It sounds like theres bad contact somewhere, does your CPU have a perfectly flat IHS? Some have a concave IHS which obviously affects the contact between cpu and hsf. What voltage are you using on the cpu for that clock? What are your stock temps?

tipes · 12 Nov 2006 at 20:00

Hi Trojan,

Yes my heatsink was actually almost cold despite the high temps, but this morning i tightened the screws a bit more as much as i dared which seems to have helped because i am now running 400X8 with cpu voltage of 1.35 as per concordes suggestion above - orhos running for 50 mins at 57 degrees with cpu fan on slowest as a test. I take it that by IHS you mean the actual surface of the cpu - have not checked this as did'nt fancy lapping & voiding warranty.

Voltage before when i had high temps was standard ie AUTO in bios.Stock temps were 41-42 odd then. I have noticed since i tightened the screws and tried concordes settings the temps rise more slowly & the heatsink is actually at least warm now. Maybe i have the problem at least half solved? btw temps before starting orthos at concordes settings were 31 - much better i think.

Thanks for your input

Mark

UPDATE 21.14

Have just run orthos for two hours ten minutes @ 400X8 voltage 1.35 and during test ave temp was around 51, idle at 29 both cores.This seems pretty good too me.BTW anybody know what the cpu voltage is set to in bios on AUTO? Must have been higher than 1.35 i guess which according to Intel is the max for the chip as the range is 0.85 to 1.352. Temps measured using coretemp.

eggcup · 13 Nov 2006 at 00:49

I have the same board and processor as you and beleive me when i say the temps can be more than a few degrees out on these boards.

FreeStream · 13 Nov 2006 at 08:41

eggcup said:
I have the same board and processor as you and beleive me when i say the temps can be more than a few degrees out on these boards.

In what way? Proof?

To be fair nothing apart from core temp can read the temp of the core..

Its_Me · 13 Nov 2006 at 14:54

I posted this in another thread(http://forums.overclockers.co.uk/showthread.php?t=17651274), but since these are running parallel I wil copy it into this too.

An Interesting read is here about the DTS - I wounder if some of the callibrations might be way out.(http://www.overclockers.com/articles1378/)

Also a worthy download is TAT ([size=-1]Intel Thermal analysis Tool).
You can grab it at[/size][size=-1] http://www.techpowerup.com/downloads/392/mirrors.php, its good as you can set each cores load independantly and watch the variation of the temps.

the only other temp program that reads the DTS correctly for sure is Coretemp. http://www.xtremesystems.org/forums...ad.php?t=103638

Since they are digital, mainboard or voltages have NO IMPACT on the readings.

In short, even core temp is not reading exacty the same as TAT under load. The Auther does'nt have an answer why as yet - but consider TAT to be the most accurate ATM.

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