Ocz

The OCZ powerstream 520W is a very powerful PSU. the organizer of PDXLAN runs his 2x7800GTX on it, with plenty of hard drives, with no problems. Plus, it has adjustable voltages, which is nice. Go with this one for good power and stabililty.

Get the modstream only if you want to cut down the amount of power chords in your case....

I'd say get the powerstream.

Just a note concerning the OCZ PowerStream...
Check this page at Tom's Hardware about the OCZ Powerstream 600W.
It failed 2 tests out of 3.

People had tell-me to buy the seasonic S12, but I dont like it... For me, a psu must have a blue led fan and sleeved cabes...

Whats the best psu for my system???

And when came to the market the Enermax Galaxy???

The Seasonic S12 is excellent.
You should also check out the Sunbeam Nuuo 550W It's a very popular PSU... and it's modular... but I don't think it has a led fan.
One with a blue led fan is the Antec TruePower II Blue but I don't think it's sleeved.

Modular cables and blue leds make for a very stable rig! Seriously, I have an OCZ Modstream that has served me well but when I upgraded my main system with the intention of having dual 7800gtx, I went with the seasonic s12 600w. For the money you would pay for the power stream, its "far" superior. Tom's Hardware and Anandtech both agree. Besides, you can sleeve your cables if you want and I believe you could easily swap out the 120mm fan in the seasonic for an led if you really wanted (warranty lost of course).

After reading the Tom's test on the OCZ, I doubt I would buy one again.

I think that your right... Leds isn't important...

But sleeved cabes... At least for me...

Just one thing: I loss the warranty if a sleve the cabes??

I'll vouch for the powerstream 520w. Look at my specs and see all the crap im running on it.

your gonna need more than a lil bat to fret with me.....