Ronjet! sure no problem! that's what this thread is here for!
Pogi,
Power supply... well.. its really hard to know where to start. First I'll start off from the cheapest to the expensive ones.
Generic Powersupply - These are dirt cheap, but the voltages on the rails are not stable. You are not getting the correct voltage rating most of the time. Especially if you have a lot of peripherals on your computer and a voltage hungry CPU and Video card. These PSU's are also loud.
Price - about 350
Dynamo Dual Fan - STAY AWAY from these. I blew one up, an 2 other friends of mine blew theirs up within weeks. (and my rig back then was just an AthlonXP 2000)
Price - about 750 - 900
TASK Dual fan - A lot of poeple from tipid pc swear by it, becuase is cheaper than most and offer a full factory warranty for 3 yrs! but Ive had 3, and they all failed on my one after the other in about 6 months. So wouldnt recommend these. I guess thats why they have the warranty claim.
Price 1500- 2300
HECs - Reliable (PowerOP or SilentOP) My last HEC lasted more than 3 yrs... before It died on me. The SilentOP is pretty quiet you could still hear a slight fan hum but its pretty negligible. Unfortunately the higest wattage model is only 385w. So its pretty good for a PC with standard equipment. The PowerOP goes up to 475w but its quite loud. I'm using one on my gaming Rig.. and I must admit.. the buzzing is really annoying me right now, but that's just me.
Price 1800 - 3200
Enermax - These have been around for a long time... very good quality PSUs, Stable. Only tested the regular 450w flavor... but it sure aint as loud as the PowerOP thats for sure.
Price 2K up - 3800 for the 450w
These power supplies are more for enthusiasts and are rock stable.
Antec Pure power - Rockstable, Dual 12v rails for more stability, expect these PSUs to last you years, can handle high PC power demands, and server applications (which you leave on 24/7)
You can get Antecs from rising sun.
about 6k-7k (ouch!)
PaxPower Akasa Powesupply - This is very interesting... Dual 12v rails (one dedicated for the CPU)... rock stable... and almost in audible at 18db.
This is what I plan to buy next. You can order this through Waycool of TipidPC (he brings in all the akasa stuff) This PSU can power a rig full of drives, lights, fans, intensive video card. Best of all its almost inaudible, really silent. (about 24db is what your ear can hear in normal situations)
about 5K
These power supplies are all available here in the philippines... there are a lot of other power supplies that are great too bad you can't buy them here. So I guess you can make a fair decision depending on what your computer power needs and silencing needs.
Here's a useful site to check what your PC power requirements might be. Make sure to add some headroom when choosing a PSU in case you add some more components.
http://www.jscustompcs.com/power_supply/Jay