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Crossfire hd 5770 recommended power supply

Hi, I'm thinking of adding another ati hd 5770 to my computer, but I do not know if I should also update my Power Supply.

I have an Antec Basiq Plus 550W.

In my computer i have:

Motherboard: GA-X58A-UD3R LGA 1366
Processor: Intel core I7 960 3.2
RAM: 6 GB (3 sticks of 2 GB DDR3)
HDD: 2 sata Drives 7200 RPM
Fans: 1 of 120mm, 2 of 140mm
Graphics card: ATI Sapphire HD 5770

Normally, I would think i have to change the power supply, but I was checking in this page http://extreme.outervision.com/PSUEngine

and when i enter the info of what I have, and add a crossfire configuration, that website gives me a recommended PSU wattage of 419.

What do you guys think? I live in Argentina, and things here are expensive, so if I could save the trouble of getting a new PS it would be great, but I do not want to put my hole computer at risk!!

Thanks in advance
11 answers Last reply
More about crossfire 5770 recommended power supply
  1. at least a 650 maybe 700W. you need to take into consideration of other parts (RAM, CPU, etc.)
  2. @ct1615: Do you have a 5770 xfire setup? Looking at your specs, the answer would be no. Running a 5770 xfire setup with only a 500W psu, you're kidding right? unless you want your pc to turn off everytime you get a graphics heavy scene. You can look at graphics and stats all day, but in the end, only real world solutions matter. @lichi run by cyberpowerpc.com, choose a setup similar to yours and add two 5770s. the minimum they will let you leave is with 650W. next time type in "power supply 5770 crossfire" and read the forum threads that come up. I just did that and no one recommended anything below 600W. except that guy
  3. http://www.guru3d.com/article/radeon-hd-5770-review-test/11
    As you can see, on that system with an overclocked i7 EE, the power consumed is around 425 watts.So, ct is right. However its good to have some extra juice so I'd recommend this one:
    http://www.newegg.com/Product/Product.aspx?Item=N82E16817151096
  4. so freakin' hostile. yeah, did my homework too. spent the past couple of months looking at benchmarks for gpus, cpus, hd, ssd, psu, mobos, ram, spent hours reading threads like this before dumping $1500 on a new build, which you did not even look at (and I'll be open to any suggestions any of you may have). I recommended a 650W psu, you say I'm wrong, then support a suggested 620W psu.
    my build:
    i5 2500k (4.5ghz oc, asus p8p67 m-pro, 8gb 1333MHz DDR3 cl9 g.skill, antec truepower 750w, CM Hyper 212+, CF2 HD 5770, 64gb crucial SSD sata3, 1tb seagate barracuda sata3 7200rpm 32mb cache, sony optiarc, thermaltake v3 BE, samsung t220h and asus vh242 monitor

    straight from amd themselves: http://sites.amd.com/us/game/products/certified/Pages/certified-power-supplies.aspx

    A number of your rants don't make sense.

    ..."duh you need like 700w i think cause that what my cousin has in CyberPower pc"
    I never said anything about buying or owning anything from cp-pc. I suggested it as a guidline.

    "the fact that you even bring up cyberpower and some of the junk PSU (600w units that would fry if they even reached 500w) they put into units, automatically makes you look like a fool"

    wait a minute, I thought you said according to the benchmarks it won't reach 350W under load. so why are now you using 500w as a marker? why not suggest the op to stick with the antec basiq 550W

    did you even check out psu's selected by cyberpowerpc? junk psu's? most (85%) psu's used in an i-7 960 setup are 80+ certified and a few suggested are 80+ gold (thermaltake, CM, etc). Yeah, I guess I must be an 'idiot fanboy' when I built my PC with an antec truepower psu: http://www.newegg.com/Product/Product.aspx?Item=N82E16817371025

    I was suggesting a 700W psu gives you the option to upgrade your xfire in the future, if not then the one suggested by tamz is a good choice. Honestly ct, would you really use a 500w, even with xfired 5770s, based on benchmarks, when you can just as easily buy a 650w for <$20 more?
  5. I think you you will not get a very much difference between one or two hd 5770 because they do not scale very largly like the 6000 series can
    between,a 650w would handle it with ease or a solid 500w too.
    here is a decent corsair psu,

    http://www.newegg.com/Product/Product.aspx?Item=N82E16817139005

    Good Luck!
  6. Since you're on a tight budget, I say get a Corsair 550VX, which should be around 100$ in your country.
  7. manu 11, he will see big improvement if he has 1080p or higher resolution, what, you think 5000 series CF gives only 1-5% performance over 1 card, no it gives a lot, not like 6000 series, but still a lot
  8. ^exactly.. probably a good 550W PSU will make it with 5770 CF if you decide on it.
  9. shrkbay said:
    manu 11, he will see big improvement if he has 1080p or higher resolution, what, you think 5000 series CF gives only 1-5% performance over 1 card, no it gives a lot, not like 6000 series, but still a lot


    no not that low but my only thought was 5000 series crossfire is not as good as 6000 series.
    but if he has a 5770 already, he will surely see an improvement cranking those resolutions.
  10. shrkbay said:
    ^exactly.. probably a good 550W PSU will make it with 5770 CF if you decide on it.

    Read on the ATI/AMD website and I quote "600W And two 6-pin connector for ATI CrossFireX technology in dual mode"

    It's under System requirements on this page:
    http://www.amd.com/us/products/desktop/graphics/ati-radeon-hd-5000/hd-5770/Pages/ati-radeon-hd-5770-overview.aspx#3

    Obviously people don't know how to read.
    And if your going to overclock the cards you will need more than the 600W recommended!
  11. And why did we resurrect this 4 month old thread?
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