hello all...just want to know..is it safe setting like this...i'm using it for folding...

item : msi gtx570 ref design
GPU clock : 800
shader : 1600
Memory : 1900
voltage : doesn;t change...

temp load : 85c...

is it safe for folding... stress it for 1 week non stop (24/7)...just want to know...and is it normal...? thanks...if not safe, need to stop folding gpu...