Aha That's great!

I got alot of fans in my case so i'm pretty sure that helps alot for me to keep the card cooled, (7x120mm casefans) hehe.

And no, i don't think it's dangerous for your card with that temp, thou it shouldn't be too hot either. Normally the mosfets gets cooled by the stock-HSF. Thou they can't be that with our layout on the PCB.

Nice OC on the mems! That's 115 more than me :p