cpu temperatures

betrayer_

Distinguished
Sep 21, 2006
94
0
18,630
i just bought a titan vanessa L-type cpu cooler.

when i run prime95 cpu temp is around 57C. Tjunction 85C.
are these figures good or bad? and also what is tjunction?

thnx
 

31computers

Distinguished
Dec 5, 2006
406
0
18,780
That is too hot! Try reinstallation, with a little new thermal paste.

Google Tjunction! I think it is an Intel standard of 85 deg C, against which things are measured 8O
 

Mondoman

Splendid
Tjunction is the temp measured at the CPU on-die thermal diode's semiconductor junction. The CPU temp reported e.g. in the BIOS is normally the temp of a temp sensor on the MB right under the CPU.
 

betrayer_

Distinguished
Sep 21, 2006
94
0
18,630
i used new thermal paste that came with the cooler. I used quite a bit of it.

is it possible to apply too much paste?? and how much is appropriate
 

CompuTronix

Intel Master
Moderator
when i run prime95 cpu temp is around 57C. Tjunction 85C.
are these figures good or bad? and also what is tjunction?

betrayer, sorry no one has given you the right answer yet. You are obviously refering to the Tjunction seen in Core Temp. From the Core 2 Duo Temperature Guide:

Troubleshooting

(H) Core Temp shows Tjunction 85c. This field is Intel's Tj max spec, is info only, and does not change.

Please review the Guide to understand proper C2D thermal relationships.

Hope this helps,

Comp 8)
 

betrayer_

Distinguished
Sep 21, 2006
94
0
18,630
i reinstalled the cooler with new thermal grease. a thin layer. made sure the screws were tight. but im still getting the old figures:

57C during load
47C at idle

maybe its due to ambient temp. 32C ambient
 

Mondoman

Splendid
Since air coolers can only lower the temp to (at best) the temp of the air in the case, perhaps you don't have enough airflow through your case. A decent cooler with decent airflow should result in an idle CPU temp only a few degrees hotter than ambient air temp.
 

betrayer_

Distinguished
Sep 21, 2006
94
0
18,630
dude speedfan shows 3 readings: temp1, temp2 and temp3. i dont know which 1 is tcase. but here's the details:

temp1: 51c (never changes)
temp2: 33c (idle) : 53c-56c (load)
temp3: -1 8O (never changes)

tjucntion:
core0: 46c (idle) : 65c-67c (load)
core1: 46c (idle) : 66c-69c (load) -> sometimes 3c higher than core0

Ambient = 32c
Chipset = 965
C2D = E6600
CPU Cooler= Titan Vanessa L-Type with 120mm fan
Frequency = 2.4 Ghz
Load = TAT @ 100% 10 minutes
Motherboard = Gigabyte DS3
Vcore = 1.250

i have 2 x 120mm case fans. intake in front of hdd rack. exhaust a rear.
 

CompuTronix

Intel Master
Moderator
Temp2 is Tcase, and the Cores are Tjunction, which are all fine, and are proportional to the high ambient temp. It doesn't leave any ceiling to OC or increase Vcore, but that's OK.

Enjoy your rig,

Comp 8)