That's pretty bad. The only think I can really suggest is to increase your fan speed or get a new fan.
my case is open
how2speedupfan
CPU ==> yes
GPU ==> not really, no
I have an 8320 with a hyper 212 evo and it got to like 60
I've done a little research and apparently its normal for a 770 to do that with its "GPUboost"

it goes from this on idle
to like 80 on gpu and 60 on cpu