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Need Help If i need a new psu or not

Hey guys Im buying a new graphic card and im wondering if i need a new psu to support it .
What im planning on buying is a Ati Radeon 5850 OEM 1GB GDDR5. and i currently have an xfx radeon 4850 1gb ddr3

cpu: AMD Phenom II x4 840
mobo: GIGABYTE GA-MA785GM-US2H
ram:4GB OCZ DDR2 1066 mhz (2x4)
Cpu Cooler: stock
Case: antec 300 ( 3. 120mm fans, 1. 140mm, 1. 80mm fan)
HDD: 2 255GB 7400rpm HDD's Raid 0
Please help
7 answers Last reply Best Answer
More about need
  1. What is your power supply model and wattage?
  2. Ooops i forgot to add it. Antec BP550 Plus, 550W.
  3. You shouldn't need to upgrade your psu.
  4. Yep! you'll be fine with that psu for those specs.
  5. Best answer
    For a system running with a single Radeon HD 5850 graphics card a power supply with a combined +12 Volt continuous current rating of 26 Amps or greater and with at least two 6-pin PCI-Express supplementary power connectors is recommended.

    Your Antec Basiq Series 550W (BP550 Plus), with its combined +12 Volt continuous current rating of 32 Amps and two PCI-Express supplementary power connectors, is sufficient to power your system with a single Radeon HD 5850 graphics card.
  6. Best answer selected by SeanWhang.
  7. thanks guys! :D
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