I just swapped out my Opty 165 for a Opty 170 LCB9E 0651 RPMW.
I'm 10 hours in running dual prime on Linux at 10 x 300 1.4V.
I'm hopefully on my way to the 3GHz club for the first time.
This one is running cool at 40c under prime on water.

My opty 165 took me to 2800MHz but lost stability over time.
Was last running it at 2.5 GHz.
That chip ran hot and needed 1.6V to achevie 2.8GHz.

My 170 was bought it at Newegg and it arrived two days ago.
Running DFI Lanparty UT NF4 SLI Expert.
1GB Crucial Balistic Tracer.

I'll post more once I'm sure it's prime stable.