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What PSU to use for my new build?

Hello, building new PC and I have got/decided on all my parts except case and PSU.

I am so unsure what to get and im on a tight budget. I've been looking around but i think just asking is mt best solution.

Here are my parts:

CPU AMD FX4100
MOBO Gigabyte GA-990FXA-D3
RAM G.Skill Ripjaws X 8GB 1600 (2x4GB)
Video Card HIS hd6770
HDD 300gb WD
DvD/rw drive

The psu calculators ive found have mostly said around 600w but a couple have said 900w which i think is probably a bit wrong.

Hoping to not spend alot over $100. any ideas?
8 answers Last reply Best Answer
More about what build
  1. Get the OCZ ModXstream Pro 600w (this is what I have on my system) or the Cooler Master Silent Pro 600w.

    http://www.hardwaresecrets.com/article/936

    Edit* FYI I have the same video card, HIS Radeon 6770, on my i5-2500k system OCed to 4GHz on stock voltage with Gigabyte Z68. Wattage for my build is about 450w. Since you got the FX4100, it will consume a little bit more power but I'm sure it won't be over 500w. So 600w PSU will be good enough even you decide to Xfire wih another 6770 in the near future.
  2. http://www.tomshardware.com/reviews/radeon-hd-5770,2446-15.html
    5770 Crossfire System Power Consumption
    Idle = 109W Load = 324W
    This system is using an i5-750. But I think that shows that 6770s don't use a lot of power, so the only reason to go above 450W is to overkill or to give yourself lots of upgrade options. Or if higher wattage units are better priced and higher quality/more feature rich than lower wattage units.

    Rosewill Capstone 80Plus Gold series; the 450-650W units are all at or below $100.
    550W $80
    http://www.newegg.com/Product/Product.aspx?Item=N82E16817182068

    XFX Pro 650W Core Edition 80Plus Bronze $80 ($30 rebate)
    http://us.ncix.com/products/?sku=59616&vpn=P1650SNLB9&manufacture=XFX

    PC Power & Cooling Silencer MK III units are good if you want a modular PSU.
  3. Thanks alot guys. I should mention I live in Australia so I am quite limited to decently priced parts. I found the OCZ ModXstream Pro 600w for $85 so i am gonna get that i think.
    I'll probably be upgrading to the next generation video cards when they come out. as theyre supposed to be more power efficient so I should be alright with this psu.
  4. Best answer
  5. obsidian86 said:


    Oh nice. Will that give me much room to upgrade in the future? Say if i were to get a more powerful graphics card and processor?
  6. mathuey said:
    Oh nice. Will that give me much room to upgrade in the future? Say if i were to get a more powerful graphics card and processor?

    yeah any singlr graphics card will be fine even a anything up to a gtx 480/580 and ill be damned if the newer graphics card draw more then any of those 2 and any cpu will be fine
  7. excellent. thanks for the help i'll be gettin the Antec Neo Eco 520C probably this week or next.
  8. Best answer selected by mathuey.
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