As per title, this power supply just expired after close to 9 years of daily use powering a QX6700 - not bad going ! Tripped the circuit breaker upstairs when it went, but no damage to the PC. Pulled an HX-620 dating back to Jan 2007 from my less frequently used Phenom II box and got it going again, no problems. So one power supply to buy now, but I should really replace both for more power efficient units.