Q6600 + Stock Cooler = What Overclock?

[JonnySUFC]

I just got an new system and i bought an Artic Freezer 7 Pro for my
P5N32-E SLI PLUS i could not get it to fit, but then theres others which can but geez i dunno, so im using the stock cooler, i was wondering what overclock could i get without messing around with voltage or max oc with Stock cooler, would be a better question, Also im using an Antec 900 so i have good cooling, also ill just tell you my temps atm (Stock Speeds)

22c - 28c Idle (Jumps)
30c - 40c Load (Call of duty 4 for few hour)

40-47c With Stress Test for 1 Hour (100% Core Usages)

Thanks Jonny.

 

[JonnySUFC]

Well my friend built my computer up and he said he got 3/4 of the clips to clip to the motherboard, but on the last clip some of the heat pipes block it, or it wont push down without bending something.

 

[JonnySUFC]

so how didu get it working