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Significant temperature rise while using docking station

Posted: Thu Apr 20, 2017 11:51 am
by zoltan87
So I have bought an "Advanced Mini Docking Station" for my T60. It works like a charm, takes one second to dock it and everything is ready to use as a desktop. Also has a parallel port on it which will be handy if I want to control my cnc controller with my laptop.

Problem is, temperetures are significantly higher while my system is docked.
If I use my laptop without the station, the cpu and gpu temps are the same, or the gpu a few degrees lower. When it's docked, cpu temp rises by about 3-4 degrees (that would be still acceptable), and the gpu rises around 10-13 degrees, which is a huge difference.

Is it caused because of the blocked bottom ventilation holes (not all but some)? Or the fact that it puts data through the docking port which is close to the gpu, and that area heats up? Also could the fact that my attached monitor is 1920x1200 resolution make my gpu work harder, causeing more heat?

It's frustrating as it would be a perfect solution for using my laptop as a home computer with all my peripherials attached, but I don't want to shorten my laptop's life with these significantly higher working temperatures.

Re: Significant temperature rise while using docking station

Posted: Thu Apr 20, 2017 12:18 pm
by Thinkpad4by3
Both are totally possible. I would recommend using the computer without the monitor for a little while and see how temp are. Also, how high are the gpu temp anyway. If it rises from 60-70 then fine but like 80-90 then you might have a problem. Do the fans turn on when supposed to?

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Re: Significant temperature rise while using docking station

Posted: Thu Apr 20, 2017 4:14 pm
by zoltan87
It's not that high, from around 53 it rises to 65-ish, but it's still higher than I would like. Fan is on (I use tpfancontrol, also have undervolted cpu and modded cooling, that's why my normal temps are so low without docking). But I would like to keep it under 60. One of the main reasons for me to use the docking station is the external monitor. But will give it a try and use it docked without the monitor, see if it affects the temps.

Re: Significant temperature rise while using docking station

Posted: Thu Apr 20, 2017 5:08 pm
by Thinkpad4by3
What about getting an advanced t60 dock with the pcie slot so you can put in an external gpu. This might be outside of your price point but just wanted to mention it.

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Re: Significant temperature rise while using docking station

Posted: Thu Apr 20, 2017 6:24 pm
by zoltan87
Yeah that was my first idea to get, unfortunately it's way out of my price point. It would be like £160 shipped to the UK. The one I got was £7 shipped :). If I saw it around £40 max, I would have bought it.

Re: Significant temperature rise while using docking station

Posted: Thu Apr 20, 2017 8:34 pm
by Thinkpad4by3
Have you tried us eBay, it is relatively cheap, 30$ us not including shipping

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Re: Significant temperature rise while using docking station

Posted: Thu Apr 20, 2017 8:37 pm
by Thinkpad4by3
I found a guy in new Jersey selling 2 advanced docks for 50 pounds in rough condition.

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Re: Significant temperature rise while using docking station

Posted: Fri Apr 21, 2017 4:49 am
by zoltan87
Yes doing some search I have come across a couple too within my price range, the issue is, postage from the USA is crazy expensive, it would double the price. And within the UK there is literally none on eBay or elsewhere.

Re: Significant temperature rise while using docking station

Posted: Fri Apr 21, 2017 8:57 am
by dr_st
zoltan87 wrote:Problem is, temperetures are significantly higher while my system is docked.
If I use my laptop without the station, the cpu and gpu temps are the same, or the gpu a few degrees lower. When it's docked, cpu temp rises by about 3-4 degrees (that would be still acceptable), and the gpu rises around 10-13 degrees, which is a huge difference.
There are two unrelated phenomena here:

1) Both CPU temps and GPU temps are a bit higher when docked. Most likely because some ventilation holes are blocked.
2) GPU temperature rises by several degrees when using DVI. This is a documented (although not fully understood) phenomenon.
zoltan87 wrote:It's frustrating as it would be a perfect solution for using my laptop as a home computer with all my peripherials attached, but I don't want to shorten my laptop's life with these significantly higher working temperatures.
Don't worry about it. It will probably not shorten your laptop's life one bit. I've been running my T60 like this for years and in a somewhat warmer climate than yours, with the stock cooler and without any undervolting (right now its idling in the dock with CPU at 66C and GPU at 67C), and it is still going strong.
Thinkpad4by3 wrote:What about getting an advanced t60 dock with the pcie slot so you can put in an external gpu.
Unless you have specific needs, it's a waste of time, money and space. Nothing I have seen in this thread justifies it, IMO.

Re: Significant temperature rise while using docking station

Posted: Fri Apr 21, 2017 9:00 am
by brchan
Check your gpu and cpu speeds while on the docking station vs without. I wonder if using the dock will cause clock rates to run at maximum regardless of load.

Re: Significant temperature rise while using docking station

Posted: Fri Apr 21, 2017 7:02 pm
by Dos3.1
Try leaving the cover open slightly while in the dock? That's what I do. Though I haven't measured the temps, it does feel a bit cooler. I'd be curious to see what the temps say if someone measures them with the lid open vs. closed.