temperature of T400

I have a question about T400 temperature
I read all most the review of T400 and most of them say: the temperature near by palm rest on the right hand-side is hotter than the previous T series?
All reply are appreciate!!!
sorry for my ENGLISH

 

I don't have any experience with the previous T61, but the new Montevina/Centrino 2 platform in the T400 should run cooler overall, lower TDP processors and more efficient chipset...my T400 is exceptionally cool, compared to my previous laptops and with RMclock under XP/Vista, it runs an additional 10% cooler (core temps) than a stock T400...

The right palmrest area is directly above the hdd, so you may experience more heat in that area, maybe more from a 7200rpm hdd, although there's a lot of debate on power & heat between 5400/7200rpm drives...

my 250 GB 5400rpm drive only feels warm at worst on the palmrest, hotter underneath the hdd, but the "hotter" is just relative to the palmrest temps and the whole bottom of the laptop is still only warm under the cpu & hdd, but literally cool to the touch everywhere else...if it was hot, i'd say so because not everything about the T400 is great (the plastics flex more than i'd like for a thinkpad, but for the price i'll accept it)...but in terms of temperature and battery life, the T400 simply excels...our Dell 600M gets HOT, even after a 20 degree Celsius reduction with RMclock...hope that helps answer your question...

 

thanks for your analysis

 

I'm running 320gb 7200rpm drives...the palm is "cool" (i.e warm but not hot)

Waaaaaaaaaaaaaaaay cooler than Dell and HPs.

Overall, the thermals on the T400 are very good.

 

The T400 is the coolest laptop I've ever had...in all respects.

 

Yes T400 is pretty cool. Mine gets hot in the center bottom and a little left side of bottom.

 

Would it be possible to overclock the t400 cpu, since it runs so cool?

Edit: only running on AC of course...

 

Power depends mostly on the drive (vendor), naturally there is a little more heat with the 7k drives, but these drives are built to handle the heat I'd say.
Anyhow, when I get my new notebook the first thing I'll do is to replace the hdd with an 320 GB Western Digital Scorpio Black with 7.2k RPM and it will smoke for sure.

I've set up a comparison at storagereview between the to-date most smoking notebook drive WD Black (besides SSD - of course), till last years top model Hitachi travel 200 GB 7k, and two current mainstream Seagate drives that you often get in your new notebooks.
You can see that the difference in power consumption is actually negligible, the WD even being a good performer for 7k RPM. But for the overall system performance you can expect a huge win with a top of the line model.
See comparison chart here: http://www.storagereview.com/php/be...&devID_1=355&devID_2=338&devID_3=329&devCnt=4

So my advise is always get the cheapest drive possible with your NB and buy the fastest aftermarket. Overall system performance will noticably snappier at the cost of about 50 bucks (I can get a WD black for 75€ = ~110$, and sell the old at ebay) - it will result in an overall gain of system performance in day-to-day use that you could not reach by just upgrading a processor by a few percent of more MHz.

 

I wouldn't, since the T400 doesn't have any PCI frequency locks, and changing the bus speed will causes crashing since everything is derived from the system bus.