Freezer 7 Pro on E6600 ... OVERHEATING!!! :((

sNNooPY · Post by **sNNooPY** » Sun Nov 05, 2006 11:38 am

hello everyone! this is my 1st post. the forum looks great I know I'll learn something useful here.

here's my rig:

ASUS P5B Deluxe WiFi-AP
Intel Core 2 Duo E6600
AC Freezer 7 Pro + Arctic Ceramique
Crucial 2x512MB Kit (CT2KIT6464AA667) DDR2@667MHz
Leadtek WinFast PX7900 GS TDH, 256MB GDDR3
Seagate 320GB(SATA-II)+160GB(SATA)
Tagan TG430-U15 (EASYCON)
Pioneer DVD-120 & DVR-108
ThermalRock Ocean Dome
Samsung SyncMaster 173P Plus
HP LaserJet 1020 & DeskJet 5150
Canon LiDE 60

and here's the pic of the inside of the case (I know it's not pretty, but it's the best I can do. Tagan's cables are REEEALLY hard to bent and manage):

the problem is: CPU temperature

here are some pics of the case to see where's my comp and it's thermal conditions:

with the front door closed:

left side:

right side:

behind:

space between the case & the table (left):

space between the case & the table (right):

AC Freezer 7 Pro runs at max (2500rpm). I don't even hear it because of the case position and my E6600 (NO-OC, runs at default 2.4GHz) is 37-40 in idle, 43-45 when some work is done, and 55-56 under 100% full load of both cores (measured with Intel TAT). that's just NOT RIGHT.

Artic Ceramique is put on the CPU, Freezer has been firmly placed.
the only thing I can think of is the position of the case, unfortunately, I have nowhere else to put it.
there are 3 vents in the case. one front intake, one exhaust behind, and 1 side intake to blow over the PCI ports.

what should I do?

psiu · Post by **psiu** » Sun Nov 05, 2006 12:12 pm

Well, I can't say specifically what temp the C2D should be, but 55-60 at full load shouldn't be a concern at all, especially with that back wall helping to trap heat in there.

Is the computer crashing or restarting under load to give any indication that the heat is too much?

Erssa · Post by **Erssa** » Sun Nov 05, 2006 12:13 pm

It's not overheating. Take a chill pill.

sNNooPY · Post by **sNNooPY** » Sun Nov 05, 2006 1:14 pm

psiu wrote:Is the computer crashing or restarting under load to give any indication that the heat is too much?

nope.everything works fine.

guess I'm a bit paranoid, that's all.

Redzo · Post by **Redzo** » Sun Nov 05, 2006 2:46 pm

Overheating ???
When your temp hits 70c and more then its overheating, now its just fine. Have a glas of water,relax and enjoy you comp instead

DaveLessnau · Post by **DaveLessnau** » Sun Nov 05, 2006 4:43 pm

I looked at the AC Freezer 7 Pro review here. According to that, the calculated temperature rise per watt (at the test bed's maximum power) should be 0.18* C/W at 12V (2400 RPM for the stock fan). Since the maximum thermal dissipation of the E6600 is 65 Watts, that gives:

x* C / 65 Watts = 0.18 or x = 11.7* C

IOW, for that CPU/heatsink/fan combination, the theoretical maximum increase in temperature (over ambient) should be no more than 12* C.

You don't mention what your case temperature is at the time you're measuring things. To estimate it, I've seen one measurement of an E6300 saying it idled at 26 Watts. By the equation above, that should lead to a temperature rise of 0.18 * 26 = 4.68* C over ambient at idle: call it 5* C. So, your initial case temperature should have been somewhere around idle - 5 or 32* C. That means that theoretically, your worst temperature should be around 32* C + 12* C = 44* C. So, in theory, including all the weasel words I can come up with about lab measurements, differences in environments, and what your case temperature actually is, etc., it sounds like your system is running about 10* C warmer than it should/could be.

Since the assumed secret throttling temperature of the Conroe is 85* C, you really don't have anything to worry about. But, maybe your airflow is turbulent enough to have trouble evacuating the heat coming off the heatsink out of the system. Thus, as the CPU/heatsink heats up, it increases the case temperature and the CPU temperature spirals up. Another thing to consider is what temperature TAT is actually measuring. I've been told that TAT measures the true core temperature. But, is that temperature the instantaneous temperature at a point in a core or is it a temperature that's more averaged out for the core as a whole (the way I saw it put in another forum was that the measured temperature of a burning match at the north pole is very hot, but the average temperature of the area is darn cold). Do your core temperatures bounce around a whole lot or do they remain fairly stable? (BTW: I'm just speculating on this)

mits · Post by **mits** » Mon Nov 06, 2006 12:10 am

Hi,
Recently i have built a computer with a set up similar to yours (m/b Asus p5b deluxe/wifi, C2D E6600, AC Freezer 7 Pro, Seasonic S12-500,HIS 1900GT IceQ3, 2*WD SataII, Case Chieftec LBX-03B, 1*12 Nexus back fan, 2*90 Nexus intake one over the hard disks and one over the vga/southbridge). When i installed the AC freezer, i didn't replace the MX-1 paste with arctic ceramique that i usually use. All fans are controlled by speedfan ver 4.31. The case fans are constantly set to 80% while the cpu fan is automatically controlled in the range of 45%(1100rpm) and 100%(2600rpm). Under normal operation the temp hovers between 32C-38C. Under full load using TAT the temp at both cores never exceeds 50C but the CPU fan ramps up to 2600rpm. Below are some readings that i took with ambient room temp at 19C and various fan settings

Cpu fan automatically controlled by speedfan (45%-100%) : CPU temp @idle:32C, @100%load:48C-50C normal operation 32C-38C, case temp 29C.

Cpu fan constantly at 60% (1800rpm) : CPU temp @idle:30C, @100%load:52C-54C, normal operation 30C-36C, case temp 29C.

The exhaust fan is unrestricted, and the vga cooler expels the hot air out of hte case.
So, i decided to have the cpu fan automatically controlled by speedfan and the system is whisper quiet while maintainig fairly good temps.

Erssa · Post by **Erssa** » Mon Nov 06, 2006 1:39 am

mits wrote:Cpu fan automatically controlled by speedfan (45%-100%) : CPU temp @idle:32C, @100%load:48C-50C normal operation 32C-38C, case temp 29C.

Cpu fan constantly at 60% (1800rpm) : CPU temp @idle:30C, @100%load:52C-54C, normal operation 30C-36C, case temp 29C.

The exhaust fan is unrestricted, and the vga cooler expels the hot air out of hte case.
So, i decided to have the cpu fan automatically controlled by speedfan and the system is whisper quiet while maintainig fairly good temps.

Considering the fact the your case has superior airflow, OPs temps seems even more natural to me.

EsaT · Post by **EsaT** » Mon Nov 06, 2006 1:55 am

At least PSU's exhaust airflow is slowed by that back wall (and you have Nokia N-70), hot air exhausted by PSU propably has to turn around and exit from front of that "shelf"...

And what I've read TAT causes/gives higher temperature readings than achieved by normal use/CPU stress tools.

BTW, I would suggest dropping other CD/DVD drive bay or two downwards, that way drives won't bake disc in drive so much.