I'm using this in conjunction with an AMD Phenom II X6 1090T processor, on an Gigabyte GA-MA770-ES3 motherboard. Case is a Coolermaster Elite 430. It's the first time I've used a third party cooler.
Fitting was problematic inside the case. It was just to fiddly to keep the brackets straight around the retention frame lugs and manipulate the small screw. Unless you get it exactly right, the cooler is just loose (and therefore useless).
After much removal and reapplication of thermal paste, reseating, failing and swearing I bit the bullet and decided to remove the motherboard and mount the cooler outside of the case. It was a success. I could see what I was doing and make fine adjustments. I suspect that this fiddly fitment is not that unusual for 'universal' fitting coolers.
I reckon the temperature with this cooler has dropped about 10 degrees C and it is much quieter than the stock item. Also worth noting, it clears my RAM next to the cooler and fan (2 sticks of Corsair XMS2 DDR2) but only just.
I've overclocked the CPU to a modest 3.5GHz. Idle temperature is 27C, under load with prime95 (large FFT) 49C. Room temperature is 22C. Fan under load spins 1885 rpm producing low hum.
With the AMD mounting, the fan is at the lower edge (near the northbridge) blowing upwards. I have an exhaust fan on the top of the case directly above the cooler (as well as two other exhausts and one input). The warm air exiting this fan certainly is confirmation this cooler is doing it's job.
In conclusion, I think that this cooler is good value for money and does a good job. However, fitting can be a pain and you would be well advised to have some spare thermal paste remover, surface cleanser and thermal paste just in case things don't go to plan first time.