Another bad temp thread

[toucam]

Just installed Arctic Freezer 64 Pro the second time and it doesn't look good, 41 idle, this is with AS5. The first time it was even worse (stock thermal compound), 44 idle
I have seen people getting better result with this cooler. What is the common temp of Opteron 170 on air cooling (especially with Arctic 64 Pro)?
I'm thinking of changing to Big Typhoon, not really keen on XP120 though as I had awful experience with XP94 on my old Pen 4 . But I'm opened to suggestions.
I don't think I did anything wrong as installing AF64 can't get any simpler!

 

[toucam]

After running 8 Primes simutaneously for 15 mins on both cores, temperature shot up to 50 with case side closed and 48 without case side.
My room temp is normal not too hot or anything as I don't turn on radiator. Oh and my case temp is 38 ish so I guess this is a little bit too hot? I've got two at the front and two at the back and one side fan.
I'm sure it's seated right as I even took out the motherboard to reseat it properly.
One thing I noticed is when I pushed down the lever, the copper base was pushed towards the other side left a bit of HSF (on the lever side) not covered. I thought the copper base is supposed to cover completely HSF's surface in order to achieve maximum heat dissipation? Can this be the reason?
Done some research and a lot of people are recommending Scythe Ninja, does anyone here have both the Big Typhoon and Scythe can do a small comparison?