Mobile GPU temps

My PowerBook runs a GeForce Go 5200 graphics chip (w. 64mb memory). I've been using it docked to my 17" Iiyama flat panel of late as I've not been taking it out of the house so much in the run up to the holidays and all.

Since doing this, I've noticed a spike in temps. With both the 12" screen of the laptop (1024x768) and the Iiyama (1280x1024) running at the same time, the GPU got as hot as 70 degrees. Now admittedly the room it's in is quite warm, so I've opened a window and am only running the Iiyama at the moment. Temps are down to the 55 mark.

Is this normal/safe? I'm not gaming on it or doing any graphics-intensive activity, but OS X isn't that GPU-hungry...is it?

Just a side dish here - I know nothing about pixel-shaders and whatnot, but the system seems to be hot when I wake it from screensaver and cools down a bit after that....is the 'Flurry' screensaver particularly intensive?

Cheers guys.

Okay, well it's good to know it's not a dangerous temperature at least.

The computer itself certainly isn't melting and I'm not getting any lockups. Things like the dock can slow down sometimes, but that's a CPU-hungry process, and it's only when I'm doing a session in Logic - my normal set of open applications is Firefox, Safari, iCal, iTunes, VLC & MSN Messsenger...I think a pretty ancient single-core manages to hold up pretty well against that sort of use!

The only thing that is a little annoying about the GPU running hotter is that the fan comes on sooner, and faster than normal. Anyone who's ever used a PowerBook will know why I wouldn't want that so much!