Installation:
Installation of the AX950AA went without a hitch in my Silverstone KL02 case. I like how Glacialtech kept the hard-wired cables to a bare minimum because I had a lot less cable mess that I had to tie away than with a lot of modular power supplies (which will often hard-wire a couple PCI-E connectors on there too). Users running smaller cases will be especially fond of that.

Testing:
Testing Disclaimer: To truly test a computer power supply to it's fullest extent would require equipment far beyond the budget of any part time reviewer. For that reason, our power supply tests are simple real world tests done by measuring it's performance when running in an above-average computer system. Since any good power supply should be able to regulate it's voltages, I never expect to see much of a change in that regards. Therefore, take our power supply tests as providing some overall feedback on how I felt all aspects of the power supply performed.

Testing System:
CPU: Intel Core2Quad Q6600 2.4ghz @ Stock Speeds
Motherboard: Asus P5K-E WIFI-AP
Memory: 4x1gb Patriot Extreme Performance DDR2 800mhz (4-4-4-12)
HDD: Western Digital Green Series 1TB
DVD+/-RW: Pioneer DVD-R212
Video: Asus 8800GT 1GB
Sound: MOTU 8PRE Firewire Audio Interface
Power Supply: Arctic Cooling Fusion 550R
OS: Microsoft Windows 7 Ultimate x64

Testing Results:
Voltages when in operation:

Acoustically, the AX950AA was very quiet when in operation in my case. As you may recall from the fan speed graph earlier in this review, it isn't until around 45% load that the fan actually starts to increase speed from being nearly dead silent. However, beyond that point it's a pretty sharp increase until it's at the full ~19500RPM. Of course the components in your computer will play a big role on how much load is on the power supply initially. My system doesn't require near the power of a 950W power supply so it will be much less loaded than with a bigger system.