Crossfire & PSU Wattage?

I recently completed my first build and would like to add a second HD6870 to my build soon. I am looking for someone to advise with regards to PSU wattage needs. :]

Current build:

Coolermaster HAF 932 Full Tower Case
Asus P8P67 Pro (Revision 3)
Intel i7 2600k
Sapphire HD6870
Coolermaster Silent Pro Gold 800W
Corsair Vengeance 2x4GB 1600Mhz
2x WD 500GB 7200RPM SATAII
2x DVD+RW 22x SATA
PCI Wireless-N Adapter

Any response would be much appreciated,
Pinny~ :>
9 answers Last reply
More about crossfire wattage
  1. You should be fine to add a second 6870 with an 800w PSU. Granted it's not the best 800w unit available, but it should be fine.
  2. anort3 said:
    You should be fine to add a second 6870 with an 800w PSU. Granted it's not the best 800w unit available, but it should be fine.


    I am also considering overclocking the 2600k (to around 4 Ghz) alongside the new GPU, would this sway your opinion any on purchasing a better PSU?

    Also, I'd be very grateful if you could list a couple of PSU manufacturers and product lines that are better recommended. Educate me! :]

    Thanks,
    Pinny~
  3. The top brands are Corsair, Seasonic, PC Power and Cooling, Antec , XFX, Enermax and Silverstone.

    With that setup you have I would trust a quality 750w unit from one of the manufacturers I listed. Maybe go 750-850w just to give you plenty of headroom.
  4. Wow. Thank you very much Anort. :]]]

    Your responses have been quick and useful. Now I just need to find a modular one. :p
  5. Cooler Master in general is not a particularly good brand but the unit he has is high end, 80 plus gold certified and more than enough for his needs even with everything fully OCed. There's no reason to replace it.
  6. I said that in my first post. It's plenty for what he has listed.
  7. +1 the psu you have currently will be fine
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