HD 6850 power question

I'm building a computer at the moment and I'm having some dilemmas.

Specs:

Gigabyte H67MA UD2H B3
i5 2310 @ 2.9GHz
16GB DDR3 Corsair Vengeance
ASUS HD6850 DCU & MSI R6850

so far..

Now , the main problem is the PSU.

1. The motherboard has a 8 pin connector for the CPU.
2. The graphics cards need one 6 pin connector each
3. The recommend power supply wattage for crossfire is 650w

So with that known, I went searching for a 700w power supply and found this: http://www.thermaltake.com/products-model.aspx?id=C_00001776

But it says : Output Capacity 600W / 500W
Max. Output Capacity 700W / 600W

What does this mean?
25 answers Last reply
More about 6850 power question
  1. I wouldn't go with Thermaltake. There are much much better options. The Corsair CX600 should do well:

    http://www.newegg.com/Product/Product.aspx?Item=N82E16817139028
  2. Really? Its only 600w though..
  3. Yes, but it's a REAL 600W. A lot of less quality psu's overstate their actual power and can't deliver what they promise.

    Also it's important to have a psu which is stable, meaning it doesn't have all kind of distortions and ripples.
  4. Ah I see , I am on a budget though so I need a power supply with some bang for buck.
  5. Well, the power supply is pretty much the one place you dont want to skimp. And you do have 2 cards. That 600W is probably the lowest I would go to run that setup.

    This might run it:

    http://www.newegg.com/Product/Product.aspx?Item=N82E16817371030

    But I would definitely go for the 600W Corsair. The thing is that is the bang for the puck power supply.
  6. GreenDutchAlien said:
    Yes, but it's a REAL 600W. A lot of less quality psu's overstate their actual power and can't deliver what they promise.

    Also it's important to have a psu which is stable, meaning it doesn't have all kind of distortions and ripples.



    I have the CX600 do you think I can use 2 x GTX 560 in SLi ???
  7. Corsair TX 650 v2. Simple. As an all rounder the TX series can't be beat overall.
  8. serginho said:
    I have the CX600 do you think I can use 2 x GTX 560 in SLi ???


    You should start your own thread but I wouldn't. You are pushing it and the CX is a budget series. It SHOULD work, but I'd like a little more breathing room.
  9. Not advisable. 700W is advised, though it might run on it.

    System in IDLE = 201W
    System Wattage with GPU in FULL Stress = 449W
    Difference (GPU load) = 248W
    Add average IDLE wattage ~ 50W
    Subjective obtained GPU power consumption = ~ 298 Watts

    http://www.guru3d.com/article/geforce-gtx-560-sli-review/14
  10. I wouldn't push it that close with the CX600.
  11. Is there any reason why you're going with two HD 6850s in a new build? That's waste of money...
  12. This PSU is better than the CX600 and currently cheaper at Newegg:

    OCZ ModXStream Pro 600W
    http://www.newegg.com/Product/Product.aspx?Item=N82E16817341017
  13. Yeah, forgot about that, was wondering to.
  14. Sunius said:
    Is there any reason why you're going with two HD 6850s in a new build? That's waste of money...


    Got them cheap from a friend.
  15. Well if you have them already, then you may as well use them. If you want to get the power to run the cards, I would look no less than the CX600 I listed. Any cheaper and quality is going to seriously decline.
  16. I can't seem to find that power supply in any New Zealand online shops (I'm from New Zealand). But I did find this which I'm considering...http://www.aywun.com/ProductDetails.asp?ID=141
  17. Not Aywun, you want quality, not throwaway junk.
  18. I quite like Aywun. Has anybody had any problems with them?
  19. Cool gadget for new years eve. :pfff: Nice find that link.
  20. Deemo13 said:



    LOL , Ok not going with them then. So this one will suit my needs? http://www.zcom.co.nz/product_info.php?products_id=11912

    Even though its not 650w
  21. Yes, it should work easily.
  22. Nice price to, good find. Have to remember that site next time i go searching down under. Already wondered about the high prices over there.
  23. Much better.
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