Been playing with my overclock

[Nick1881]

Hope no one mis-reads that title lol.

Anyway I have had my Q6600 running at 400x9 3.6Ghz for a few months now, I could never get it stable passed this, I decided to overclock the ram to see if it was just my cpu, it happily went to 960Mhz so this got me thinking, maybe i could get more at 8x multi, so I tried 450x8 3.6Ghz, its worked put prime failed on 1 core and temps reached 72C. This is with 1.5v through the chip, my idle temps are between 42 and 49C.

Do my temps seem a little high? Am I doomed to never get higher clock?

Specs

Q6600
Gigabyte DS3 Rev 1
Crucial Ballistix 4 x 1Gb
Scythe ninja with Sharkoon SE2000 fan

Also I noticed when I change settings in my bios it doesnt post on the first try, carpy mobo?

Anyone got any idea's? Or have I reached my limit with my current air cooling?

I'm not greedy I swear

 

[Nick1881]

Thanks w3bbo, but even at 400x9 loads temps were reaching 70C, I think its the most I can get without better cooling. Cant really warrant spending more money just to get a few extra 100Mhz.

I tried upto 1.55v before to get 3.8 stable and it wouldnt have it.