Is ongoing in a computer (6-core CPU, 16GB RAM, 3x2GB RAID5, BluRay burner, five fans and 'ne fat graphics card), which it exploits to almost 65%. Fan is only audible if one is located directly behind the power supply and one of the lukewarm air flow around the nose blowing. And that under full load (BOINC incl. CUDA).
And who triggers his assurance to the part, perhaps one should rather times the total load on wiring harness to keep in mind! More than two and a half KW are at 16A fuses not in it without the lines stew or the circuit breaker switches off.
By using it's full "Star Number"!