Need a new quiet PSU for my current HTPC, suggestions?

about 250W

 

What would I need to have 350W, 450W or even 550W power consumption with full load? Not that I'll do it, I just want to know and understand a little better...

Anyway, I guess I'm going for the Corsair VX550, now I just have to gather some money and look for the cheapest place to buy it

Thank you all for your help.

 

I'm not sure I understand the question...lessee your individual 12V peak loads fo the Athlon X2 4850e is ~3A and a 9800GTX+ is ~10A and add an amp for each drive and an amp for every three fans and we are probably talking about only a 16A draw IF you stress the CPU and the GPU and all the drives at once which games don't do. But anyway 12V@16A=192W and your 3.3V and 5V loads average 40-50W so yeah mid 250's peak load. PSU's will last longer, run cooler/quieter and be more energy efficient when the load is kept under about 75% capacity so something 350 watts minimum.

 

oh you mean what kind of setup draws those loads? higher draw overclocked CPU and multiple higher draw GPU's and peltier cooling are the big loads...

 

got my xilence 750w mod and i have the say its realy quiet and stable and has some serious quility ohh and 135mm fan at 650rmp is dead silent

ohh and one of the first post sead thatthe 9800 gt/gtx/gtx+ had a 8pin it only has 2 6pins

 

Never mind that, thanks once again for all the help.

 

Don't know how accurate it is, but this might give you some reference. I would always add another 10% of margin on top of whatever they tell you just to give you some head room and security for future upgrades.
Asus PSU Wattage Calculator

 

This is confusing me... That site says I need like 500/550W of power and I didn't even selected all the peripherals I'm using. All this with the GeForce 9800 selected, but if I remove it, it drops to 300W.

Will the Corsair VX-550 be enough?

 

yeah that ones not so good...this one has the best results but lacking in component entries:

http://web.aanet.com.au/SnooP/psucalc.php

this one has the best entries (can glean info here and take it to the other if needed)...the result is recommended PSU wattage with overhead built in:

http://www.extreme.outervision.com/psucalculator.jsp

 

On that last one, it gave me about 270W.