Home system for multiple years

[toonboon]

Lately I've been looking for a new PC and I though, the heck with it, I'll just get a whole new experience and build my own. I've pretty much got most of the parts I want but I'm really a little lost as to the PSU... No clue what's best there...

I've got the following parts already:

Asus M4A79XTD EVO + Phenom II 955BE (AMD 790X)
€ 224,90
$ 317,92

Asus EAH4350 Silent/DI/1GD2 (Retail, VGA, DVI, HDMI, CrossFireX)
€ 39,99
$ 56,52

Western Digital WD10EARS (Bulk, Caviar Green) Boxed? (do I need this?)
€ 74,90
$ 105,88

Arctic-Cooling Alpine 64 GT (Retail)80mm CPU fan
€ 7,99
$ 11,29

Tacens Aura (Retail, Zwart/Wit, 3-pins)120mm Case fan
€ 8,99
$ 12,71

Cooler Master Elite 331 (Retail, Black/Zilver)
€ 32,99
$ 46,63

For the ram I can either buy:
2 Dual-kits of 4GB OCZ obsidian 1600MHz DDR3 RAM for $ 205
8gb kingston 1066MHz DDR3 from some local around here for $ 190
a quad-kit of Kingston HyperX 1333MHz for $ 296,71 from the same shop as all the other stuff listed above

Which to pick?

As far as I could find all this is compatible with each other but I need a PSU... And I really have no clue how much power I need...

FYI this system is to last for another 5 years (as my current 512MB RAM onboard VGA core 2 duo from 2003 ) and not for hardcore gaming.

If anyone could help me out a little, or push me in the right direction that'd be awesome =)

Toon

 

[jsc]

A good 450 watt will do. Something like Antec or Corsair in 500 - 550 watts would be better.

 

[toonboon]

Okay I'll look for a Corsair or Antec one!

I also found the be quiet! Pure Power BQT L7 430W Is that one any good or is 430W just too little power?

 

[ekoostik]

With that PSU, it's not the 430Ws that would worry me, it's the quality. Don't get me wrong, it may be top notch. But there's a reason you usually see the same brands recommended: Corsair, Antec, PC Power & Cooling, Seasonic, etc.

Many of the lower power PSUs claim an output they can't meet - or worse, they cannot meet with any stabilitiy and consistency. A couple of good sites to do PSU research are:
http://www.hardwaresecrets.com/
http://www.jonnyguru.com/