Originally posted by: jonmcc33
Can't stand 80mm fans. I suggest a Corsair HX620.
taken from PC P&C myths page
6. SHOULD AN ATX POWER SUPPLY BE COOLED WITH A 120MM FAN?
Most low-noise ATX power supplies today utilize a top-mounted 120mm fan rather than a rear-mounted 80mm fan. The 120?s favorable reputation is based on the fact that under low to medium load conditions, the 120mm fan provides sufficient cooling at low RPM and low RPM fans are generally very quiet.
However, problems occur with this design when the load exceeds 50%-60%. Because the 120mm fan consumes about 1.5? of vertical space inside the PSU, heat sinks, capacitors, and other components are about 30% smaller in height compared to a PSU with a rear-mounted fan. The smaller parts can handle less current, so the maximum power available with the 120mm design is limited. And, because the heat sinks have less surface area, more air flow is needed with this design to keep the thermal situation under control. With 80%-100% load, the 120?s fan speed can double and the noise level can jump by up to 20dB.
In conclusion, for systems that require more than 50% of the power supply?s capacity, a well-engineered PSU with a rear-mounted 80mm fan will provide superior performance and reliability (due to larger components) at a noise level comparable to a PSU equipped with a 120mm fan.
I chose a 620HX to power a E6600 OC 3.83Ghz, 4gig Ram, 2x 8800GTX OC, 4 HDD, 7 Fans, 1 Pump, DvD writer because of all the great reviews I received. It was rock solid and while the computer was idling very quiet but when loaded it was very loud, I switched it a Silencer 750w and it is a little louder at idle but it is much quieter at load.
I would recommend the corsair to anyone SLI 8800GT but when you use 2 power hungry GPUs you can't go wrong with the Silencer, it is much better at handling higher loads.