H60 cooler giving same temps as the stock cooler

[youngrob]

Hey guys
Just got a H60 cooler for my cpu, the thing that bugs me is that it gives me the same temps under load as the stock cpu cooler did.
This cant be right, right?
What can i have done wrong?
I mean, the thing goes from 40C to 70C just as i start the stress testing,
(Using HWmonitor, using Asus AI suite II it sais 53C)
I believe the cooler is tight enough to the cpu, and i've tried switching from intake to exhaust with the radiator fan.
The cpu is a I7-3770k
And how important is the backplate? Because I might have ripped of the plastic that covers the side that connects with the back of the motherboard.

Thanks in advance

 

[RunLuke]

The plastic is supposed to stay there.

How tight is the backplate? Did it move before you mounted the waterblock? Also, I don't think those temps are awful, still 30 degress from TJ max.

 

[Lalith Reddy]

check if your screws are tight enough and did you use thermal paste

 

[youngrob]

1. Yes, before I mounted the waterblock the backplate could move, I know the temps are not awful but they are exactly the same as when I hade the stock cooler.
2. The screwes are thight enough, cant screw more and if I try press on the waterblock any more the mobos starts to bend. And yes i did use the thermal paste (it was already applied)

 

[RunLuke]

I put rubber washers on mine to make it stable against the motherboard, my temps dropped.

 

[youngrob]

It is already really stable :S