I have both a TruePower 480w and an Enermax EG465P-VE.
My TruePower 480 has been in my system for about 5 days now and here's my preliminary report:
1) It's super-quiet compared to the Enermax EG465P-VE that I've been using. Loudest thing in my system now are my Maxtor D740X HDDs.
2) The PSU fan speed does vary as the temps go higher but it just barely raises the noise level. The PSU fan RPM runs at 1465 RPM at idle and climbed to a max of 1701 RPM after running Prime95 for 13 hrs.
3) I have 3 of my Panaflo 80mm L1A's (case fans) plugged into the variable fan speed connectors. They are noticably quieter, and they start real slow on bootup. They must be running near 7volts at the low end, because you can actually see the blades turning slower. They never seem to get any noisier after running under load so I don't know if they're speeding up or not (no rpm monitoring of Panaflos).
4) Voltage (according to BIOS/Asus Probe). This will be Enermax vs. Antec:
At idle: 12v= 11.904/11.84, 5v= 5.08/4.919, 3.3v= 3.328/3.25, Vcore= (set at 1.65 in BIOS) 1.632/1.632.
At load: 12v= 11.648/11.84, 5v= 5.08/4.892, 3.3v= 3.296/3.264, Vcore = 1.58/1.60
-looks like all the voltages except the 12v line are kind of the same between the 2 PSUs, but the 12v line is more stable under load on the Antec PSU.
5) Case temps under load are about 1C higher with the new PSU, CPU temps are also 1C higher.
So far I'm pleased with this new PSU. I bought it hoping it would be quieter and it definitely is so I'm happy. I wasn't having any voltage issues with my old PSU so I wasn't looking for any improvement, but it does seem that the 12v line is more stable on the Antec PSU. That's probably a good thing for us Northwood OC'ers.
