I have read through some threads and am concerned my OEM 525W Dell power supply is not enough for this card even though they say its under rated and these cards run with low power demand. 

Are there specific numbers I should be looking at on the power supply to know for sure.  What I also noticed is on AMDs site it says one 6pin buy my XFX card needed 2 6 pin, dont know why theres a difference.

I found this image of the specs from the side of the power supply but do not see specifically where it says the watts for the 6 pin plugs. If this is enough power then I would rather not upgrade the powersupply.

http://www.northeastnetwork.com/ebayimages/Power%20Supply/YN637_Label.jpg

OS=Win. 7 pro.

In Dell XPS Studio 9100, I7, 9gig ram, 2 Itb HDs, Dual DVD drives.

Thank you and God bless.

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Well, that PSU "might"run your 7870, but the risk of a big kaboom is huge..

Specific numbers for a PSU?. Let's see: from a good brand, like Seasonic, XFX, Corsair, Silverstone or another good one; for your system specs an future upgrades, around 600-650W; with "only" one +12V rail (despite some units have more than one, don't pick one); 80Plus rating, let's say Bronze or Silver (Gold or Platinum are bestest); and with at least 60A on that +12V rail..

Why the 7870 uses 2 6-pins connectors?. If I remember correctly, because uses a big PCB, from the 7900 series I think, and those uses 2 connector to properly power that card..

Please, one advice: don't be cheap on choosing the PSU. It's the heart of your system, now and the years to come, so don't risk your PC for saving a few bucks..

 

Best regards..

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8320 @ 4,5 / 990FXA UD5 / 7950 @ 1150-6200 / Switch 810 / H80 / 16 GB RAM / 23" 5760x1080 / SSD 64GB RAID0 / Tr2 750W

I noticed when i played bf3, with auto video settings most of which were medium, when lots of action would happen around me like explosions it would act funny and seem to hang up. I am looking at the corsair ax750. Reasonable price, seems to have more power then i will ever need since my mb will not allow crossfire and is gold plus. Thank you,i do not want a kaboom!

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Might I suggest an 80 Plus Platinum PSU, or at the very least an 80 Plus Gold, such as the SeaSonic X750 or SS-860XP?

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Crosshair IV Formula, Phenom II x4 965 w/ Corsair H60, 8 GiB OCZ Platinum DDR3 1600, XFX HD 7970 Ghz, 512GB Vertex 4, 256GB Vector, 240GB Agility 3, Creative X-Fi Titanium w/ Creative Gigaworks S750, SeaSonic X750, HP ZR2440w, Win 7 Ultimate x64

Thank you.  The one I mentioned above, I believe is.  It is their professional series.  At least it says it is on new egg.

CORSAIR Professional Series Gold AX750 (CMPSU-750AX) 750W ATX12V v2.31 / EPS12V v2.92 80 PLUS GOLD Certified Modular Active PFC Power Supply

Thank you for the tip.

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