GPU Temperature - How hot it too hot? (And what to do about it...)

Keeping some clearance under the case for and being careful to avoid blocking the vent under the hinge on the back edge go a long way to maintaining comfortable temps. Try to avoid using the MBP on a blanket or pillow to keep things cool. A lapboard--either homemade of purchased--is a good idea for time you aren't using the notebook on a desk. The processor is thermally protected and is supposed to do a safety shutdown when temps hit 100C. \

You can use the utility Activity Monitor (in Applications > Utilities) to see if any process is running overtime and creating extra heat.

Yeah mine runs around the same and it's what I consider a 'cool' previous generation MBP which sees heavy use and is doing well for past 8-10 months.

So I don't think there is anything to worry.

"left hand side" heat usually means that the HD is doing a lot of work (often because of spotlight indexing) or because a flat battery is getting charged up and heating up the relevant circuitry.

None of those temps are a worry. Even GPU temps in the 80's C aren't uncommon when it is working hard , and many Dell's run the same video card another 20º higher again!

Cheers

Rod