It is hard to find head to head frio a50 212. the a50 and 212 is near same- but I did see a test where the frio beats the a50 by like 8f. I think the frio is 2 fan and it does cost more. Being cooling and as best you can get for the price. $10 or so more bucks for 8f cooler is not bad.
So maybe the frio is the better choice. 10 bucks would not break ya I am sure.. Less heat better the oc or performance. You could maybe shop around and get a better price on the cooler.
I have seen benches where folks are getting 5 gigs on that cpu and very cool with the 212.