Hello AsusRoG,
Those temps are way too high.
What CPU cooler do you have ?, you need to get the the temps down to at least the low to mid 50C's when under load or your CPU wont last very long, also some more case fans may help, but not knowing your system specs its a bit hard too say.
Fill in your system specs and we will see what we can do to help.

This is a laptop?

And are you using software to overclock?

Those temps are high, (especially if that's the tcase temp) but it's how much voltage your using that should be the real concern.

There's a good chance you will run into heat problems during extended periods of high load.

Those temps are still 'safe' , but they are right near the limit. I certainly wouldn't run it at those temps for any extended period of time.

If the CPU gets too hot, the built in thermal throttling will kick in and either slow your CPU right down, or more likely shut the laptop down until it cools. ( Unless you have disabled the feature in BIOS)

Since Orthos is an artificial test, it may be worthwhile monitoring the temps while doing 'real world' tasks.

Generally speaking, overclocking a laptop is considered a bad idea simply because of inadequate cooling. Elevating and ensuring the intake fan is unobstructed like you are doing is a good start.

I would say, running at those temps will reduce the life of your CPU.
I know Intel post some high temps for your CPU, but running at 75C for prolonged periods is not a good idea.
I would download SpeedFan and a good CPU bench mark and give it a good run, its better to know, even if you don't like the results.
You may want to consider a cooling mat too.
Good luck and let us know how it goes.