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Crossfire HD 7770 PSU ??!?

Hello guys , i'm building my own rig but i got a problem choosing a PSU.
I got the AMD FX-8120 chip, 8 GB of ram, 1 HDD 500GB drive,and I will use 2 HD 7770 (i got 1 and i plan to get a second one).
I am planing to buy them from amazon uk as it oly ships to my country. I have picked those 2 PSUs and i need your recommendation .
1)Antec EarthWatts Green Series EA-650 650W Power Supply Unit - http://www.amazon.co.uk/Antec-EarthWatts-Series-EA-650-Supply/dp/B0071I55PY/ref=sr_1_146?m=A3P5ROKL5A1OLE&s=computers&ie=UTF8&qid=1358533752&sr=1-146#productDetails

2)Zalman ZM600-GT 600W ATX Power Supply- http://www.amazon.co.uk/Zalman-ZM600-GT-600W-Power-Supply/dp/B007MJGFY2/ref=sr_1_144?m=A3P5ROKL5A1OLE&s=computers&ie=UTF8&qid=1358533244&sr=1-144

Sadly my budged will be around 60-70 pounds so i need a good PSU with less extras but that will support the future Crossfire mod and will have some power for OC-ed CPU.
10 answers Last reply Best Answer
More about crossfire 7770
  1. Neither of those are bad PSUs as such, but for the price you might be better off with one of these-

    550W http://www.amazon.co.uk/XFX-P1-550S-XXB9-PRO550W-Edition-Supply/dp/B004RJ8EKI/
    650W http://www.amazon.co.uk/XFX-Edition-Bronze-Certified-Wired/dp/B006ZT8X90/

    Also the Antec HCG series are very good too, and based on the same Seasonic stuff but usually cheaper.
  2. Of Rammy's choices, I would recommend the OCZ. Of your choices, I would select the Antec. But keep in mind that mid-range cards (especially AMD) have an issue with micro-stutter when paired up.
    http://www.tomshardware.com/reviews/radeon-geforce-stutter-crossfire,2995.html
  3. Could you give me a link to Rammy's choice of OCZ ? I'm quite new to the forum. Thanks in advance.
  4. hunter86_bg said:
    Could you give me a link to Rammy's choice of OCZ ? I'm quite new to the forum. Thanks in advance.

    Sorry, I mis-typed. I meant to say the Xfx 650W PSU. I confused this post with another I was working on.
  5. What do you think about this one :
    Antec EarthWatts Green Series EA-650 650W Power Supply Unit - http://www.amazon.co.uk/gp/product/B0071I55PY/ref=ox_sc_sfl_title_3?ie=UTF8&psc=1&smid=A3P5ROKL5A1OLE
  6. hunter86_bg said:
    What do you think about this one :
    Antec EarthWatts Green Series EA-650 650W Power Supply Unit - http://www.amazon.co.uk/gp/product/B0071I55PY/ref=ox_sc_sfl_title_3?ie=UTF8&psc=1&smid=A3P5ROKL5A1OLE

    That would be fine. I have used and liked all the Antec PSUs I've had. But remember, with that unit you will be limited to 2 cards that only require a single 8/6 pin PCIe pwr cable each (like your 2 x HD 7770s) or a single card that takes 2 8/6 pin cables. Not an issue probably, just thought I'd mention it. Oh, and remember that it doesn't come with a power cable. They assume you will be using your old cable.
    http://www.antec.com/pdf/flyers/EA650_Green_EN.pdf

    Here is a review from one of the most respected PSU evaluation sites: http://www.kitguru.net/components/power-supplies/zardon/antec-earthwatts-ea-650w-review-green-2011/
  7. What do you think about this one: Corsair TX650W V2? I can't find what type of connectors it has and if it could support crossfire of 2 7770s.It seems to be quite a deal.
  8. Best answer
    Corsair TX650 V2 has been discontinued, which is perhaps why there are deals to be had.
    It comes with 2 (6+2) PCIe connectors which is perfectly sufficient for 7770 Xfire.
    It's a good unit, if it's on offer for a good price then definitely grab one.
  9. Thanks Rammy!It's really on a deal.
  10. Best answer selected by hunter86_bg.
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