First:
4770K - Not OC'ed
Asus Maximus VI Formula
XSPC Raystorm with PK3
Alphacool UT60 480 - Push only with CM Jetflo's 1000rpm - 2000rpm, temps don't change much
Corsair 900D
When I am gaming on that PC it gets even hotter because my gpu is still being air cooled atm. But when idling, my 780ti is at around 32C. Very good airflow in my case. When I installed my cpu block, I definitely didn't do a great job because backplate kept falling off and I was getting quite irritated.
Other build:
G3420
Intel stock with the copper base, not the full aluminum one.
Asus H81I-Plus
Silverstone SG08 with Corsair AF140 intake on top.
Only thing I do with this PC is download stuff, that's all it does. When I run AIDA64, Core 1 maxes at 52C and Core 2 at 49C. Idle temps are average 40C which is just a bit too hot for my liking. I made DAMN sure I put the perfect amount of TIM too, using Arctic Silver on this one.
All these temps are with HWMonitor and Realtemp reports same thing too.
I don't have a thermometer in my room but every time my parents walk in they complain about the heat so probably not 20C in my room, maybe 25C. But when I blast my AC at 20C, the temps don't drop at all.