New Build - Limited By Current Power Supply

I'm looking to build a new computer (my first build) reusing my case and power supply. My power supply is only a 390w so I know it's going to limit what I can do. I'm hoping to spend no more than $450 and come up with something that will last for a couple of years and get me comfortable with building computers so I can build a much nicer one in a few years.

Approximate Purchase Date: as soon as I can get a good setup figured out

Budget Range: under $450

System Usage from Most to Least Important: internet, gaming (Civ series), music, excel, movies

Parts Not Required: keyboard, mouse, monitor, speakers, OS, power supply (API5PC17), Antec (SLK2650-BQE)

Preferred Website(s) for Parts: newegg.com

Country: United States

Parts Preferences: AMD, GeForce

Overclocking: No

SLI or Crossfire: No

Monitor Resolution: 1920x1080

Additional Comments:

Here is what I have picked out so far. When I tried looking up power consumption I got mixed results with some showing my power supply would work and others saying it wasn't enough. Any help confirming what I have will work or any suggestions on pieces to switch out that will work better would be greatly appreciated. Thanks in advance for any help.

ASUS M4A87T motherboard
http://www.newegg.com/Product/Product.aspx?Item=N82E16813131699

AMD Athlon II X4 645
http://www.newegg.com/Product/Product.aspx?Item=N82E16819103885

Galaxy GeForce GT 430
http://www.newegg.com/Product/Product.aspx?Item=N82E16814162067

G.Skill DDR3 RAM
http://www.newegg.com/Product/Product.aspx?Item=N82E16820231422

Seagate Barracuda Hard Drive
http://www.newegg.com/Product/Product.aspx?Item=N82E16822148767

ASUS DVD Burner
http://www.newegg.com/Product/Product.aspx?Item=N82E16827135204

AGI 390W Power Supply - Already Have
http://sewelldirect.com/390W-ac-to-dc-computer-power-supply.asp

Antec Case - Already Have
http://www.newegg.com/Product/Product.aspx?Item=N82E16811129148
5 answers Last reply
More about build limited current power supply
  1. Hi there! Welcome to the forums.

    First of all, it's not worth keeping that PSU. It looks like a piece of crap and is going to bottleneck your system. Here's a few pointers I would make:
    -Grab a cheap (but quality) 400-500w PSU for ~$45. Corsair, Thermaltake, Antec and Silverstone all offer compelling options at this pricepoint.
    -Drop to a tri-core. It will give you the power you need or less.
    -Get a cheaper mobo. That one is pretty feature rich, yet doesn't even support AM3+. Look for one that's around ~$70.
    -Use the saved money to grab a better GPU. Something like a 6770 would probably get the job done, although a 6850 would definitely be preferable. You'll need to buy a new PSU, so use what you have left to determine what you should get.

    Hope that helps a little!
  2. striker410 said:
    Hi there! Welcome to the forums.

    First of all, it's not worth keeping that PSU. It looks like a piece of crap and is going to bottleneck your system. Here's a few pointers I would make:
    -Grab a cheap (but quality) 400-500w PSU for ~$45. Corsair, Thermaltake, Antec and Silverstone all offer compelling options at this pricepoint.
    -Drop to a tri-core. It will give you the power you need or less.
    -Get a cheaper mobo. That one is pretty feature rich, yet doesn't even support AM3+. Look for one that's around ~$70.
    -Use the saved money to grab a better GPU. Something like a 6770 would probably get the job done, although a 6850 would definitely be preferable. You'll need to buy a new PSU, so use what you have left to determine what you should get.

    Hope that helps a little!



    Thanks for taking the time to help me out. I took your recommendations and came up with a bit different set-up.

    AMD Athlon II X3
    http://www.newegg.com/Product/Product.aspx?Item=N82E16819103911

    Gigabyte GA-970A-D3 motherboard
    http://www.newegg.com/Product/Product.aspx?Item=N82E16813128521

    EVGA GeForce GTX 550Ti
    http://www.newegg.com/Product/Product.aspx?Item=N82E16814130625

    Thermaltake 500W power supply
    http://www.newegg.com/Product/Product.aspx?Item=N82E16817153113

    I left the other pieces the same as I think the new processor would use the same RAM. Does this seem like a better machine for the money? What would be my limiting factors on performance for this setup? Thanks again for the help.
  3. Much better!
    if you buy this GPU today (haha I know i'm rushing you) You can get it for $120 with rebate and promo code. That's a steal, as it outperforms the 550 Ti by a significant margin. http://www.newegg.com/Product/Product.aspx?Item=N82E16814102908

    Go ahead and swap the PSU for this one: http://www.newegg.com/Product/Product.aspx?Item=N82E16817139027 It's $2 and slightly better quality.

    Everything else looks pretty good! The Tri-core could end up limiting you further on down the road but i wouldn't worry, as it won't happen until you get a higher end GPU.
  4. Why does everyone say get that Card? if your gonna get a 6850. Get XFX they have Lifetime warranty and get a little better rating.
    The 550 ti is ok itl play most games on Medium. But i still recommend getting a better PSU. atleast one with a 23A 12v rail or more.
  5. You got an XFX 6850 that costs $120? I'm all ears if so.

    OP, you may wanna look at this chart. Maybe we should switch to a Pentium G630, eh? http://www.tomshardware.com/reviews/gaming-fx-pentium-apu-benchmark,3120-10.html
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