Over Heat when using Thunderbolt

[lagisibuk]

Hi...

I have something trouble here.
I'm using retina 15 (mid 2012). The problem is : when I'm using thunderbolt (TB -> ethernet or TB -> projector), heat for my macbook increase up to 30%++

Example : when I'm using macbook for office application and using developer tools (dreamweaver, photosop, audio editing), CPU temp is 38 and GPU temp is 48 celcius

I'm working in room with 22-25 celcius temp

When i'm using thunderbolt for connectivity (projector or ethernet), CPU is 59 celcius dan GPU 62 celcius.

my question : it's a normal condition or something wrong with my mac?
need your advice guys...

thank you so much

 

[simsaladimbamba]

Your Mac does not overheat, if it would, which would be around 105° C or so, it would simply shut down to prevent damage.

As you use Thunderbolt, you probably use a device associated with it, which might trigger some process to use more CPU. Check Activity Monitor for that.

Using Activity Monitor to show you CPU and RAM usage​

As for heat: Those Macs in their heat - a sine of over-heating? - a short story by Mister GGJstudios

 

[maflynn]

I find my rMBP sits in the high 40s to low 50s doing normal stuff, surfing, office docs. Doing anything else causes the temps to rise a bit but not horribly. I'd say imo, your temp range isn't horrific.

I can't answer why you temps increase when a TB device is connected but I have a TB ethernet connection and an external display and the temps I mentioned are with those devices connected

 

[ColdCase]

Your temps rise when connected to the projector probably because you are using more GPU to drive it. This can be significant.

Dunno about the ethernet, but the FW adapter gets quite warm when there is a drive attached. The rMBP is providing power to the conversion chips within these adapters.

 

[Vanarak19]

Mine sits at about 75c with external display. Its the 650m being used so it heats everything up

 

[lagisibuk]

Mine sits at about 75c with external display. Its the 650m being used so it heats everything up

Yes, maybe u're right, auto switching GPU. but in case for ethernet without TB, i dont know why

Your Mac does not overheat, if it would, which would be around 105° C or so, it would simply shut down to prevent damage.

As you use Thunderbolt, you probably use a device associated with it, which might trigger some process to use more CPU. Check Activity Monitor for that.

Using Activity Monitor to show you CPU and RAM usage​

I will check my activity when using TB, nice idea

I can't answer why you temps increase when a TB device is connected but I have a TB ethernet connection and an external display and the temps I mentioned are with those devices connected

it's a unique case , I'm not worry for heat, just mention, are this is normal?

Your temps rise when connected to the projector probably because you are using more GPU to drive it. This can be significant.

Dunno about the ethernet, but the FW adapter gets quite warm when there is a drive attached. The rMBP is providing power to the conversion chips within these adapters.

Yes, when using projector maybe.