what psu do i need for my new build ?

i am upgrading my build ( it was my first time putting together a pc and i enjoyed it a lot :D ) , im getting a new graphics card and CPU , so im wondering if i should change my power supply?
my main specs :
-Radeon HD 7970 3GB
-i5 3750
-corsair vengeance 2x4gb 240 pin DDR3
-motherboard : GIGABYTE GA-B75M-D3H
-power supply : CORSAIR Enthusiast Series TX650 650W

so im just wondering since i have been checking out the forums here , but couldn't seem to find an answer.
4 answers Last reply Best Answer
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  1. None - your current 650 will be fine.

  2. Best answer
    Are you adding an HD7970 to an existing one in CrossFire-X or putting in one graphics card only. If adding an additional card, more power is suggested. If simply putting in one only, the TX650 should perform wonderfully
  3. no need to. your PSU is plenty fine for that.

    if you ever add a second 7970, then you'll be looking to get into an 800w.

    for now, keep what you have :0
  4. thanks :D
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