So it seems that a 3570k is around 15 *c on average hotter than a 2500k @ 4.5ghz if 69 *c was the max temp.
When I had my D14 my max temp with my 2500k @ 4.5ghz 1.35v was around 55 *c F@H, obviously temps will vary between chips and slightly different voltages needed, but with a good cooler temps won't be a problem.
Those temps are from an OCCT run as well and that stresses the CPU more than Prime95 so under normal use like gaming etc temps will be lower.