Is my PSU big enough for dual 6870s

I have a Kingwin Laser 750W and a HD Radeon 6870. Will I need a bigger PSU for a second 6870 or is this one big enough, here's my complete specs:

CPU: i7 2600K @4.2Ghz
Motherboard: Asrock Z68 Extreme4 Gen3
GPU: AMD HD Radeon 6870
Storage: 120GB Corsair Force GT, 1TB WD Green 5400rpm, 320GB Seagate Barracuda 5400rpm, 1TB WD external HDD
Case: Coolermaster HAF 922
RAM: GSkill Ripjaw X 4GBx2 @1866Mhz
PSU: Kingwin Laser 750W

I also might add a hauppauge HD PVR in the near future
5 answers Last reply Best Answer
More about dual 6870s
  1. THe 6870 only draws 150 watts, so your PSU should be plenty for 2 of them. I cant find a reveiw that talks about the amperage requirments of the 6870. So you will need to check what the max amperage is of your PSU and what the 6870 might draw.
  2. Best answer
    The 6870s CF require around 55-60 amps on the 12v rails and minnimum 700W PSU. So you should be good to go.

    Edit: Your PSU has a single RAIL at 62AMPs. You should be fine! Have fun.
  3. Well, each 6870 will draw about 150W or so under full load. Combined that's 300W.

    The PVR isn't going to draw more than 10W.

    Looks like you've got plenty of spare wattage.
  4. Best answer selected by outlaw00000.
  5. i was just about to ask this question but i have a antec truepower new 650w. could mine run 6870 cf
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