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OC psu i5 3570k sapphire 280x dual-x (no crossfire)

Hi,
I'm going to buy a new computer and I'm undecided on which psu to buy to power this configuration
cpu: i5-3570k
mobo: Asus B75-plus
ram: 4GB Silicon Power 1333

I'd like to do some oc on the 3570k but I have no idea on the power requirements.
Thanks

ps: sorry for the crossfire in the tags but I don't know how to delete it
3 answers Last reply Best Answer
More about psu 3570k sapphire 280x dual crossfire
  1. are you going to install GPU in your system?
    if yes please state down the model....

    If you are not going to install any gpu then 450w-550w will be more than enough
  2. Best answer
    You can't even overclock, because you've chosed a B75 motherboard, you need atleast a Z75 or Z77 for overclocking.
  3. AMDRadeonHD said:
    You can't even overclock, because you've chosed a B75 motherboard, you need atleast a Z75 or Z77 for overclocking.

    Thanks, I didn't know that
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