FX-8150 Heat Issue !!!!!

Hello, I have just recently noticed that my FX-8150 has been hitting over 70c when playing BF3 on ultra.

I have read that the MAX safe CPU temp is 61c! My Idle temp is around 27c after a days use.

I had a Antec 302 case with the following specs:

Motherboard - GA-990-FXA-UD3
PSU - 1050w
Ram - 8gb Kingston
GPU - GTX 560ti
CPU - FX-8150 NOT OC
7200rpm Hardrive

I decided to upgrade the case to a Thermaltake Overseer RX-I
This increased the cooling by a small amount to about 69c while playing bf3 on ultra.

The cooler on my CPU is not stock, but I am unsure of what it is as it was given to me.

I was thinking of getting the Noctua NH-D14 All-In-One Extreme Performance CPU Cooler.

Would this keep the temps down ?

I used CORE TEMP to see my temps & i also used other programs with not much of a difference.

If it is hard too understand, please reply and I will verify it.

Thanks in advance