Z97 Pro 4 + i5-4690k + Raijintek Thermis

[nikodemmarczak2]

Soo, i don't know what's with it, and if it's normal, but my CPU overclocked @4.2ghz with voltage dropped by 0.005v after 20 minutes in aida64 stress test places at cosy 85 degrees.
Is it normal?
What can i change, and how much can i pump it up? (Approximately of course)

 

[RememberThe5th]

Use prime95 without avx http://www.mersenneforum.org/showthread.php?t=21462 download it, edit txt (the link for it), and run it.