Overheating in T43P

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shaiburstein · #1 Post by **shaiburstein** » Mon Jun 20, 2005 3:08 pm

Does anyone's T43P get crazy hot? I just ran a test and my CPU was running at 92 C... and the bottom of the laptop gets too hot to touch...
Anyone else have this problem?

mixelogj · #2 Post by **mixelogj** » Mon Jun 20, 2005 3:25 pm

My T43 is not getting THAT hot. The CPU has reached max 66 C degrees, but the HDD has slightly passed the warning mark of 55 C degrees. DOn't know if it's normal, but it probably is. It's pretty hot around here too.

UCI2CI · #3 Post by **UCI2CI** » Mon Jun 20, 2005 3:30 pm

that is way too hot; really close to shutdown temps. time to call IBM

#4 Post by **K. Eng** » Mon Jun 20, 2005 4:56 pm

What's the ambient room temperature? That makes a big difference in CPU temps.

shaiburstein · #5 Post by **shaiburstein** » Mon Jun 20, 2005 7:06 pm

no more that 21.... I have found one solution... I set the CPU to Adaptive and then it runs at 50. but if I run it at high then it stays between 80 and 92.

sugo · #6 Post by **sugo** » Mon Jun 20, 2005 7:25 pm

Are T43s configured as using Home/Office or Always On in the factory image? It seems a few people reported the high heat issue because of that.

rssb · #7 Post by **rssb** » Mon Jun 20, 2005 7:53 pm

Setting it to adaptive helped in my friend's case.

But again if someone wants to do a cpu or gpu intensive work ( esp if you are have the performance models -T43p) then eventually at some point they have to run at high perfomance.

HD's running continously at 55 might suffer life / performance issues in the long run , the hot palmrest will be different issue while typing up something.

I guess these hardware issues should carry more weightage instead of whitelisting same brand hard disks with different firmwares !

sugo · #8 Post by **sugo** » Mon Jun 20, 2005 8:15 pm

HDD running at 55'C is really over the limit. It's not normal.

I have used a few laptop hard drives, they rarely ever go over 45'C under high load (room temperature at about 26'C).

emorphien · #9 Post by **emorphien** » Mon Jun 20, 2005 8:27 pm

If it's hot out it's easy for a laptop drive to reach or exceed 55C. Particularly in smaller laptops. I don't like hard drives getting over 50C, but it's after they pass 60C that I really start worrying a lot. The hotter your drive is though, the worse it is for your drive's life span.

As far as your CPU being that high, that's not normal for any laptop and probably exceeds the standard operating temps but most likely isn't in the danger zone, it's just very unacceptable that it's that hot. Sounds like your laptops cooling system isn't quite right, I'd look for a replacement if your room is 21C and your CPU is that high. (Call IBM)

The only reason I could see a CPU getting that high is if you were running a CPU intensive app and the laptop is closed in a laptop sleeve with nowhere to radiate heat or get fresh air or push out exhaust.

also...
If you're in a warm climate or your AC is busted, a cooling base (assuming it works well on thinkpads) may be a good investment. I have no idea how well cooling bases work on the T series thinkpads, from my friend's experience (T20) they work quite well but it varies with laptop design.

#10 Post by **K. Eng** » Mon Jun 20, 2005 8:32 pm

Temps of 50-55C seem a bit high... that's about what my Athlon desktop (0.13u Barton) idles around. My T40 idles around 35C when the ambient temp is about 20-21C.

fbrdphreak · #11 Post by **fbrdphreak** » Tue Jun 21, 2005 10:51 am

50C is normal for a T43 idling unfortunately.
The load temp seems high, but not out of the realm of possibilities. Is it a 14" model? The 14's seem to have more trouble cooling the hot Sonoma chipset & CPU. Also, try turning your wifi card off; the IBM a/b/g tends to produce a good deal of heat

rssb · #12 Post by **rssb** » Tue Jun 21, 2005 11:39 am

Does anyone have approximate numbers to compare

a) intel a/b/g and IBM a/b/g heat production.
b) the new sonama cpu vs dothan vs banias
c) did they change the manufacturer for the heat sink? The external shape seems to be changed a bit, internally if they changed the wick materials or flow pattern.

thanks

dvorak · #13 Post by **dvorak** » Tue Jun 21, 2005 12:14 pm

On a side note, I think a Thinkpad user shouldn't be forced to disable some accessories so that the machine wouldn't overheat.
If I'm at an office and need to use Wifi while doing 3d work and copying files from a DVD to the HDD I can't have the machine shutdown because the cooling is poor.

Max I've reached is about 75-80 degrees, played a racing game on a blanket :)

Navck · #14 Post by **Navck** » Tue Jun 21, 2005 12:24 pm

Hmm weird, my T43(Non P, somewhat undervolted) goes to 41C idle in adaptive, harddrive is 35C

fbrdphreak · #15 Post by **fbrdphreak** » Tue Jun 21, 2005 12:28 pm

Navck wrote:Hmm weird, my T43(Non P, somewhat undervolted) goes to 41C idle in adaptive, harddrive is 35C

That is about right.

stalin · #16 Post by **stalin** » Tue Jun 21, 2005 12:33 pm

Navck wrote:Hmm weird, my T43(Non P, somewhat undervolted) goes to 41C idle in adaptive, harddrive is 35C

What kind of model do you have?
If what you are writing is true, then I have a notebook with a defect, I guess. I can't bring the temp lower then 47. Normally it is around 48-50C.

Navck · #17 Post by **Navck** » Tue Jun 21, 2005 12:33 pm

Also note, this is in the miserable 80-100F weather of California...

sugo · #18 Post by **sugo** » Tue Jun 21, 2005 8:30 pm

Navck wrote:Hmm weird, my T43(Non P, somewhat undervolted) goes to 41C idle in adaptive, harddrive is 35C

That's very close to my T42. Perhaps not all T43s are bad after all.

roast · #19 Post by **roast** » Tue Jun 21, 2005 8:36 pm

Navck wrote:Hmm weird, my T43(Non P, somewhat undervolted) goes to 41C idle in adaptive, harddrive is 35C

*How* did you manage that? Also, is the fan constantly on?

adampatrick · #20 Post by **adampatrick** » Tue Jun 21, 2005 9:10 pm

fbrdphreak wrote:The 14's seem to have more trouble cooling the hot Sonoma chipset & CPU.

Can those T43 15" users confirm that their machines don't exhibit the fan/high heat behavior?

#21 Post by **K. Eng** » Tue Jun 21, 2005 9:45 pm

I would guess that the T43s with sub-2GHz processors probably don't have thermal characteristics all that different than the T42s.

The 2, 2.1, 2.13, and 2.26 GHz Dothans are going to be pushing up to that 27 Watt limit a lot more than the lower clocked ones. Combine that with the tight confines of the 14" chasis and the system as a whole is going to run hotter.

My advice stays the same - don't buy the fastest system unless you need every last bit of speed. Slower T42 and T43 machines will do the job for the vast majority of users and will generate less noise.

sugo wrote: That's very close to my T42. Perhaps not all T43s are bad after all.

Navck · #22 Post by **Navck** » Wed Jun 22, 2005 2:38 am

roast wrote:
Navck wrote:Hmm weird, my T43(Non P, somewhat undervolted) goes to 41C idle in adaptive, harddrive is 35C
*How* did you manage that? Also, is the fan constantly on?

Yep, but I barely can hear it anyways. I keep the window and fan under my desk on, but they really don't help my TP. Sometimes it goes to 43C. (Your ear must be 2 inches from the keyboard to HEAR it)

Bluecat · #23 Post by **Bluecat** » Wed Jun 22, 2005 4:37 am

Interesting thread....

I find that the outside temperature has a lot to do with the CPU temp. Now ambient temperature is around 28 celcius, fan on, no wireless CPU at max: CPU temp at 58 celcius. A few days ago I run a GPU intensive game (Schysm, quite beautiful and non violent....) and the laptop was very hot at the bottom. CHC showed 88 Celcius, but not more. It was about 32 degrees in the room though.

I guess a 10 degree difference in room temperature would have the same effect on CPU: +10

With dynamic switching off I can just see the temp go down. Already down to 52 (-8 in 7 minutes.....)

sugo · #24 Post by **sugo** » Wed Jun 22, 2005 7:04 am

Is there a reason cpu has to be set at max speed apart from testing? Personally I found the pentium M adaptive speed switching works fairly well.

arwuah · #25 Post by **arwuah** » Wed Jun 22, 2005 8:32 am

shaiburstein wrote:Does anyone's T43P get crazy hot? I just ran a test and my CPU was running at 92 C... and the bottom of the laptop gets too hot to touch...
Anyone else have this problem?

Same here buddy. I thought I was the only one experiencing this problem. My machines gets really hot sometimes to the point where my paints get warm. This only happens when I am doing a lot of work on the machine all at once. For instance, if I am transferring large files (4Gigs), using wireless or even using the cd-burner while compiling programs that take about 5-10minutes as well as surfing the Net at the same time.

My machine is usually on AC power and the machine is set to Maximize Performance in the BIOS, hence it is running at top speed most of the time. My room temperature is between 65F to 70F and well ventilated.

stalin · #26 Post by **stalin** » Wed Jun 22, 2005 8:45 am

arwuah wrote: My room temperature is between 65C to 70C and well ventilated.

What? Are you living on Mars or something?

roast · #27 Post by **roast** » Wed Jun 22, 2005 10:32 am

Navck wrote:Yep, but I barely can hear it anyways. I keep the window and fan under my desk on, but they really don't help my TP. Sometimes it goes to 43C. (Your ear must be 2 inches from the keyboard to HEAR it)

Okay.. well, I can hear mine from over 15 feet away in the same room, and it's at a point where I can't nap 15 feet away from the unit.

Now, I know I've gotten much much more sensitive to noise when I'm trying to sleep, as I used to have 5 10,000RPM SCSI drives in a Compaq Proliant 1600 (which has 3 3"+ fans itself for PSU and processor cage cooling), and the hard drives would have a periodic squeals from, I guess, its rotational speed. But still...

arwuah · #28 Post by **arwuah** » Wed Jun 22, 2005 12:30 pm

stalin wrote:
arwuah wrote: My room temperature is between 65C to 70C and well ventilated.
What? Are you living on Mars or something?

Sorry about that, I meant F (Fahrenheit)

Navck · #29 Post by **Navck** » Wed Jun 22, 2005 4:20 pm

Okay.. well, I can hear mine from over 15 feet away in the same room, and it's at a point where I can't nap 15 feet away from the unit.

Now, I know I've gotten much much more sensitive to noise when I'm trying to sleep, as I used to have 5 10,000RPM SCSI drives in a Compaq Proliant 1600 (which has 3 3"+ fans itself for PSU and processor cage cooling), and the hard drives would have a periodic squeals from, I guess, its rotational speed. But still...[/quote]

Try 6 Vantec Tornados for your case cooling, then muffling them with pillows. I did that for a while, thats possibly why I'm immune to my TP's noise.
PS - I'm not sure if that nosie is my fan or harddrive spinning...

roast · #30 Post by **roast** » Wed Jun 22, 2005 4:58 pm

Navck wrote:Try 6 Vantec Tornados for your case cooling, then muffling them with pillows. I did that for a while, thats possibly why I'm immune to my TP's noise.
PS - I'm not sure if that nosie is my fan or harddrive spinning...

For a second, I was wondering if the forum had messed up the posts because I was sure those were my words. Until I got to the third paragraph. =P

On my compaq (that I've since retired), fans were distinctively blowing air, while hard drives were distinctively metal turbines that screeeeeeeeched. I was younger then, from when I was 10 to 12, but once I got to high school, I absolutely couldn't take it anymore, so that was when I made the boiler room my room-full-o'servers. That quickly solved the problem, until about 2 years ago, the noise crept up to my room through the central air vents. Now that I'm in college, I only have to put up with it 4/12 months of the year (3 summer + 1 winter), so I can't complain.

The thinkpad is a whole other story though, which I'll have to put up with if I'm going to keep it for 12/12 months (for at least a year).

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