the default low temps of my 9150e and the achilles that i got from lingloong seem to keep my temps around 28-29 on idle

one thing to note though, for anyone planning to get a Cooler Master casing with side window. the acrylic i just a little too thick to close the panel properly, and the fittings are a bit brittle, so need to be careful when taking it out however, if you're buying an nvidia version casing, the acrylic thickness is just nice