So I took the plunge and put down 160 for the Phantom which I'm hoping turns out to be sound investment.

Here's my setup:
Lian-Li V1000
Asus A7N8X
Athlon 2500+ XP M clocked @ 2.5Ghz (12.5x200)
1.575 Vcore
Zalman 7000AlCu
2 x Papst 4412FGL
Passively cooled TI4200

As mentioned by Mike and several others, the PSU itself is absolutely quiet; it is quite nice to see a product live up to manufacturer claims.

Initially, I had the warm side up which increased temperatures across the board by roughly 5 degress (case, cpu, mobo) on both idle and load. I attribute this severe rise in temperature to the unique design of the v1000, coinciding with what davidstone28 reveals in his comments about the ST30NF in his V2000 here.

Clearly, that method of mounting was not going to work for me, so heeding mike's comments, I tried reversing the orientation of the PSU with the warm side down. I added a bit of thermal tape to the bracket which holds up the PSU to transmit some, albeit a small amount, of the heat to the case.

This simple change in orientation turned out to help a bit, and my temperatures now measure as follows:

Idle:
CPU 53C
Case 38C

Load:
CPU 57C
Case 39C

These figures are roughly 1-2 degress higher than with the actively cooled PSU.

Testing notes:
- Load numbers were acquired by running folding@home and source video stress test.
- Ambient temperature in testing environment is about 22C
- Both case fans act as INTAKE; heat is vented out through the holes in the case.
- Zalman is stock and runs at lowest setting.
- Front fan is undervolted to 7V, while rear intake is set to 5V

Miscellaneous notes and annoyances:
- A high end power supply like this should come with some sort of cable management aids (zip ties, cable clamps, cable wraps, etc) but this one does not.
- Cable management is a bit troublesome in my case because of the bulky 24-pin to 20-pin that must be utilized for ATX.
- I originally thought the blue light might be a bit intrusive (not personally a fan of big bright neon), but it's actually a nice touch; not too obvious.

Overall, I can whole-heartedly say that this PSU is fantastic for silent computing. It runs well, and completely quiet. Of course, it is ridiculously expensive for a power supply, so the matter of its value is truly up to the individual buyer.

(Of course, it seems most people here are silence fanatics so it just might be worth the cash).

I'm happy with it and will probably keep it in my box if things continue to run well over time. It brings me that much closer to my goal. Now the only thing left is the stupid seagate!

In the future I intend to try mike's suggestion in another thread and add conductive material between the case and the PSU in order the use the case to dissipate more heat. Anybody have suggestions?

Another satisfied customer Interesting to note that althtough there is a temperature increase, the effect isn't too drastic. Thanks for reminding me as well that I should try and reverse the rear case fan to see if that improves temps. I agree that the noise benefits of these fanless PSUs really are quite significant over stock PSUs.

(Incidentally, there was a slight error in my initial comments on the Silverstone and the effects on CPU temps. I had refitted the CPU with some new artic silver and hadn't taken this into account when measuring temps. After about a week of the artic silver burning in, CPU temps dropped significantly - I guess the chemical composition of the thermal paste had settled to optimum levels. Had edited my comments to make them more accurate).