External monitor really increases GPU temps!

Haven't seen this discussed, and I guess if I had thought about it, it might have been obvious, but I've been using a 22" monitor with my m1330, and my GPU temps have ranged from 72-85 degrees, usually on the higher end.

I just switched to the laptop monitor, and GPU temps are now at 71 C.

I'm on the latest BIOS, A12, and the most recent Nvidia driver.

Again, I guess it should be obvious that the GPU would have to run harder to drive a 22" monitor, but with all of the threads I've read about the effects of drivers, bios, games played, etc. nobody seems to have mention the effect of using an external monitor.

Not that there's much I can do about it, I'm not going to stop using my external monitor (what a difference!)

 

Are you running dual-screen? i.e. external and built-in?

 

HP had the same issue with their business notebooks, and supposedly it is the recommendation of the laptop GPU vendors because the GPUs have to draw more power to drive an external VGA/DVI port (some pins are used to power a small IC in the display that gives the GPU basic configuration info).

 

Nope. I use either the external or laptop monitor (other then just testing the dual mode once). Most of the time, I'm on the external 22" monitor.

 

Run dual mode, its awesome.

I do it at home and always miss it when i'm away. In work I just moved to a different team and was given a much better computer, but now I only have 1 screen :-( atleast its 1600x1200 lol

 

Is the lid closed while running the external screen? That might lead to higher temperatures..

 

When I did the test, the lid was not closed.

However, generally I do leave the lid closed when viewing my external monitor.

My wrist rests (palm rests?) do NOT get very warm, seems most of the heat is coming out of the back left side of the notebook, so I don't really think leaving the lid open or closed matters all that much. My main concern was/is that the palm rests, if they get hot, not damage the screen when the laptop is closed. But, again, my palm rests do not get hot at all, even when the back of the laptop is hot.

 

Nope as Greg said, it does take more power going through the DVI/VGA port to power an external display. The concept is similar to powering a display of 800x600 resolution takes less power than a resolution of 1920x1200.

 

Still, it doesn't make that much of a difference.. I tried powering a 1600x1200 screen, using the VGA port, and after half an hour of idling/general use, the highest temp was 74°C, against 71°C for just the internal display.. . No movies/games, though... Ambient was 28°C..

P.S. Using an external display when a keyboard isn't available is a real pain...

 

Are you saying that DVI/VGA takes more power then HDMI, or that either HDMI and/or DVI/VGA takes more power then powering the internal monitor?

Thanks