HD 7870 Power splitter question

Here's the deal guys. I want to buy this HD 7870, amazingly priced at $210:

Graphics card:http://www.newegg.com/Product/Product.aspx?Item=N82E16814150605

The problem is the power supply unit i was going to buy has only one 6-pin PCI-E power connector, whereas this card requires two.

PSU: http://www.newegg.com/Product/Product.aspx?Item=N82E16817171060

So I was browsing around for a solution, and I found this:

http://www.amazon.com/StarTech-com-PCIEXSPLIT6-6-Inch-Express-Splitter/dp/B004NNTVT6/ref=cm_cr_pr_product_top

Basically it splits one 6-pin connector into two.

So now I have a simple question: will it work? Or will I end up blowing lots of hardware up and ruining a perfectly good graphics card? NOTE: I want to overclock by at least 5-10%
21 answers Last reply
More about 7870 power splitter question
  1. I think you might need a 500 watt PSU. Most graphics cards come with molex to 6 pin adapters with the card in the box but i would consider a different powers supply.
    What are the rest of your system components?
  2. jay2577 said:
    I think you might need a 500 watt PSU. Most graphics cards come with molex to 6 pin adapters with the card in the box but i would consider a different powers supply.
    What are the rest of your system components?


    i5 3750
    hyper 212+ CPU cooler
    asrock pro4
    agility 4 64 GB
    seagate barracuda 64 GB
    cooler master storm enforcer
    LG dvd/cd drive
  3. Here's a PSU that kicks that one's A$$.
    http://www.newegg.com/Product/Product.aspx?Item=N82E16817139027&Tpk=cx500

    It's even cheaper.....
  4. amuffin said:
    Here's a PSU that kicks that one's A$$.
    http://www.newegg.com/Product/Product.aspx?Item=N82E16817139027&Tpk=cx500

    It's even cheaper.....


    Don't think I'm shooting you down, but that one sucks. It only gets about 400 Watts on the 12 volt rail, and was apparently overrated as psu (It's true performance lies somehwere around the 420 range). One of Corsair's less reliable units.
  5. I have an antec pro gamer 520 watt and it's awesome.It's a rebranded seasonic. I would go with a good 500 watt if i were you at least. An antec would be my recommendation but it's your decision. It will be a kick ass system you have with that set up
  6. So does anyone know about the cablesplitter thing?
  7. The cable splitter is fine as long as you have a psu which is powerful enough(amps are more important than watts) but like i said in my previous post the card will come with it's own adapter converting 2 molex to a 6 pin so you shouldn't need the cable splitter.
  8. X3noc1de said:
    Don't think I'm shooting you down, but that one sucks. It only gets about 400 Watts on the 12 volt rail, and was apparently overrated as psu (It's true performance lies somehwere around the 420 range). One of Corsair's less reliable units.


    Still better than the CM POS.

    Your system isn't going to draw anywhere near 400Watts regardless.
  9. amuffin said:
    Still better than the CM POS.

    Your system isn't going to draw anywhere near 400Watts regardless.


    Even if I overclock my processor AND gpu?
  10. Yes.

    The 7870 is very efficient, so is the 3570K in terms of power draw.
  11. amuffin said:
    Yes.

    The 7870 is very efficient, so is the 3570K in terms of power draw.
    http://www.guru3d.com/miraserver/images/2012/r7870-msi/Untitled-1.png


    Thank you, I think i'll go with this one. But seeing as you ARE a senior user, what is your take on the whole power splitter thing? I've gathered that it's unneccesary, but for future reference?

    btw, the CX500 actually costs more than the GX 450, you overlooked the promo code. (43.99 vs. 26.99)

    Also, would this CX 430 be enough (http://www.newegg.com/Product/Product.aspx?Item=N82E16817139026)?
  12. The CX430V2 only has one 6+2 Pin connector, I own one myself. :)

    The less connections, the better.

    I wouldn't even buy the GX series......

    Here's another one that's $35.
    http://www.newegg.com/Product/Product.aspx?Item=N82E16817371031&name=Power-Supplies
  13. amuffin said:
    The CX430V2 only has one 6+2 Pin connector, I own one myself. :)

    The less connections, the better.

    I wouldn't even buy the GX series......

    Here's another one that's $35.
    http://www.newegg.com/Product/Product.aspx?Item=N82E16817371031&name=Power-Supplies


    That's an amazing deal, but it says it comes without a power cord. What does that mean? If I get that answered, I'll buy this one, it's an amazing deal. Thanks for all the help btw
  14. I think people only worry so much about the quality of the PSU's is that if you've ever had one fail(like me) they can break other components in the system when they blow. I am 36 years old and only had this happen to me once in my many system builds but it destroyed my hard drive and graphics card. I learned to never cut costs on the power supply again. Maybe read some reviews before you buy
  15. The power cord is what connects the power supply to the mains electrical socket. If you already have a cord just use that as they are all the same
  16. Oh and that antec is a good PSU. I would get it:)
  17. jay2577 said:
    The power cord is what connects the power supply to the mains electrical socket. If you already have a cord just use that as they are all the same


    What if I don't have an extra one?
  18. X3noc1de said:
    What if I don't have an extra one?

    if your swapping out PSUs then re-use that one; why would that be a problem?

    a lot of PSUs do not supply a power cord; something about being "green"
  19. Always get a high quality PSU. It is the one piece of hardware you can use across many upgrades and never regret.
  20. If you have a single rail PSU, then splitting is fine. If you have a two rail PSU, then you'd want to use a 4pin molex to 6 pin adapter so you can split up your AMP load.
  21. X3noc1de said:
    Here's the deal guys. I want to buy this HD 7870, amazingly priced at $210:

    Graphics card:http://www.newegg.com/Product/Product.aspx?Item=N82E16814150605

    The problem is the power supply unit i was going to buy has only one 6-pin PCI-E power connector, whereas this card requires two.

    PSU: http://www.newegg.com/Product/Product.aspx?Item=N82E16817171060

    So I was browsing around for a solution, and I found this:

    http://www.amazon.com/StarTech-com-PCIEXSPLIT6-6-Inch-Express-Splitter/dp/B004NNTVT6/ref=cm_cr_pr_product_top

    Basically it splits one 6-pin connector into two.

    So now I have a simple question: will it work? Or will I end up blowing lots of hardware up and ruining a perfectly good graphics card? NOTE: I want to overclock by at least 5-10%


    Hi - you def don't want to get the Coolermaster PSU, others will prob advise you on Star Tech.

    Tom
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