Should I change my PCU

[boneca1]

I'm currently running 520W Modular Corsair PSU with following setup:

i7 920 Nehalem
Asus P6T
XFX GeForce 9800GT
Corsair 520W Modular
Corsair DDR3 1333 6GB (3x2)
Antec Three Hundred
Samsung 22x SATA LightSribe
WD 300GB VeloRaptor SATA
WD 2 x 320GB Blue SATA

It's running fine.

I'm planning to add 3 more HDs to my system
WD 2 x 640GB Black SATA
WD 250GB Black SATA.

Will this PSU be enough to carry all this including (6 SATA drives) or should I consider to upgrade to 620, 650 or even 700~
Also PSU beeing modular is great and neat but where can I get additional SATA cables for my additional HDs? or should I go regular PCU not modular and I won't have this problem?

The eXtreme Power Supply Calculator tells me that I won't need more than 430W but I'm not sure that completely true?

Thanks all in advance...

 

[yh125d]

You should be fine. Your current setup uses probably 350-375 from the wall I'd imagine, less if the i7 is at stock speeds. Adding 3 more HD will probably add 40w or less to that load. To be safe let's assume 425w. Divide that by ~80% efficiency and it's using ~350w DC. Still easily in the right range

 

[boneca1]

Thank you yh125d It's nice not to spend additional money after spending quite a bit on the new build. The only problem right now that 520W model came with 4 SATA cables vs. 620W model has 8 and this is what I need.
I send email to Corsair asking if they can send me additional SATA cables (I need 2 with 4 connectors) and if they will send it I'll stick with current PSU.


EDIT: I ended up ordering 620W which should get here buy the end of this week. Since I bought my current PSU less than 1 week ago I will go back to Micro Center and return it. The difference will be $30 - not too bad. If I end up getting extra cables from Corsair for free, well I will have extra cables if I ever need them.
In case If I want to overclock my I7 to something higher or add additional GPU card later on, this will be handy...

 

[yh125d]

Yeah chances are Corsair will send you some cable for free. They tend to do that alot, sending extra pci-e cables and whatnot. Great company