Quote:So there seems to be a relation of the NB with bus frequency (even is HT is kept low) and if the bus frequency goes above a range the NB chip will need more voltage too.
I've been doing some tests in my system the last couple of days, the system seems to be stable @4GHz with Vcore=1.44v but during prime the temperature hit 55 degree (with Skythe Mugen 2 revB ) which I consider high (although the mean was about 52 Celsius).
I know that these peak temperature will never be seen in normal operation but on the other hand my room temperature is about 20 and I expect it to go up to 30-32 in the summer.
I've settled to 3.9GHz, (18x217), the temp max is about 51 degree
Ram is set to 1447MHz , but with lower timing (7-8-7-24) compared to the specs 1866MHz/9-10-9-28 , I can increase it to 1580MHz (16.5x237 cpu) but the timings will have to be increased and I'm not sure there is a real benefit.
cpu/NB=2604 (I consider it a good compromise) and HT=1953 or 2170 (x9 or x10 , both work fine )
Voltages to default (which is 1.17 full load for cpu/NB) except from Vcore which is 1.428 full load and 1.404 idle.
Cool and quiet fully operational , drops Vcore to 1.3v and the cpu cores to 800MHz when idle