You're looking pretty good there. I'm running my 4790K at 4.6GHz with a similar cooler (Glacier 240L - expanded loop to include a GTX 980). My load temps are a little better than yours in games (usually around 60 - 64 c) but I am also using high static pressure fans. I'm assuming that Prime is beating you up more than gaming would so I'd expect your temps to fall closer to mine with gaming loads.
Either way 74 C is pretty good IMHO for a CPU getting abused.
You're looking pretty good there. I'm running my 4790K at 4.6GHz with a similar cooler (Glacier 240L - expanded loop to include a GTX 980). My load temps are a little better than yours in games (usually around 60 - 64 c) but I am also using high static pressure fans. I'm assuming that Prime is beating you up more than gaming would so I'd expect your temps to fall closer to mine with gaming loads.
Either way 74 C is pretty good IMHO for a CPU getting abused.