How much power supply would i need for my build?

MSI P67A-GD53 (B3) LGA 1155 Intel P67 SATA 6Gb/s USB 3.0 ATX Intel Motherboard with UEFI BIOS
Intel Core i5-3450 Ivy Bridge 3.1GHz (3.5GHz Turbo) LGA 1155 77W Quad-Core Desktop Processor Intel HD Graphics 2500
EVGA GeForce GTX 550 Ti (Fermi) FPB 1GB 192-bit GDDR5 PCI Express 2.0 x16 HDCP Ready SLI Support Video Card (x2)
Hitachi HD 2TB
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More about power supply build
  1. 450w+ unit with 30a+ on the 12v rail will do the job

    models like the antec neo eco 520w, corsair cx500, antec earthwatt EA500, OCZ modXstream 500w are some budget options.
  2. geodecent said:
    ok thanks then i think my 550w psu will work then, since the minimum requirement for the gtx 550 is 400w and since im putting in two I thought i would need to add an extra 150w.


    Crap, I missed the "x2" at the end. My fault on that, but yes a 550W should be fine.
  3. ok thanks then i think my 550w psu will work then, since the minimum requirement for the gtx 550 is 400w and since im putting in two I thought i would need to add an extra 150w.
  4. What PSU do you have at the moment?
  5. its a cougar 560w
  6. geodecent said:
    its a cougar 560w


    This one? http://www.hardwaresecrets.com/article/Cougar-A-Series-560-W-Power-Supply-Review/1332/1

    Not a very good unit, unfortunately. http://www.hardwaresecrets.com/article/Cougar-A-Series-560-W-Power-Supply-Review/1332/10

    It'll probably still work, but I can't really recommend it, either. Its protection circuits seem to do a decent job, but that's about it.
  7. yeah i know i was planning on getting a OCZ ModXStream Pro 700W
  8. geodecent said:
    yeah i know i was planning on getting a OCZ ModXStream Pro 700W


    The ModXStream Pro 700W is a good unit, but the ModXStream Pro 600W is a great unit, and all that you need, really. http://www.hardwaresecrets.com/article/OCZ-ModXStream-Pro-600-W-Power-Supply-Review/936/9
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