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Gaming Rig - Need Advice

Okay so I am not 100% sure if I have a powerful enough PSU. I just bought it recently when my original went out. The original was a 401 watt artic.

If you know more about power distribution than me, I could really use advice before I overhaul my system.

Current set-up:
-FX-4100 3.8 GHz Quad-Core-
-Nvidia GTX 550-
-Older GigaByte motherboard.-
-Raidmax Hybrid 2 RX530SS 530W ATX12V V2.2 PSU- (http://www.newegg.com/Product/Product.aspx?Item=N82E16817152028)

I am looking to upgrade to:
-FX-8320 Vishera 3.5 GHz Eight-Core- (http://www.newegg.com/Product/Product.aspx?Item=N82E16819113285)
-GigaByte GA-990FXA-UD3 Motherboard- (http://www.newegg.com/Product/Product.aspx?Item=N82E16813128514)
-2x Sapphire Radeon 7850 1GB 256-bit- (http://www.newegg.com/Product/Product.aspx?Item=N82E16814202004)


Is my current PSU enough to run a 125W CPU and 2x 7850's?
3 answers Last reply Best Answer
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  1. Best answer
    No, it will not handle that setup. You need 21 amps for a single 7850, you only have 20a and 17a on both rails.

    This power supply has a total of 45, which is enough for 2x crossfire: http://www.newegg.com/Product/Product.aspx?Item=N82E16817151119

    For extra headroom I'd recommend: http://www.newegg.com/Product/Product.aspx?Item=N82E16817151088
  2. edogawa said:
    No, it will not handle that setup. You need 21 amps for a single 7850, you only have 20a and 17a on both rails.

    This power supply has a total of 45, which is enough for 2x crossfire: http://www.newegg.com/Product/Product.aspx?Item=N82E16817151119

    For extra headroom I'd recommend: http://www.newegg.com/Product/Product.aspx?Item=N82E16817151088



    That's very helpful thank you. I have to ask though, what is the benefit of 2 12V rails compared to 1?
  3. alexh92 said:
    edogawa said:
    No, it will not handle that setup. You need 21 amps for a single 7850, you only have 20a and 17a on both rails.

    This power supply has a total of 45, which is enough for 2x crossfire: http://www.newegg.com/Product/Product.aspx?Item=N82E16817151119

    For extra headroom I'd recommend: http://www.newegg.com/Product/Product.aspx?Item=N82E16817151088



    That's very helpful thank you. I have to ask though, what is the benefit of 2 12V rails compared to 1?



    None really, it's the last thing you need to worry about when purchasing a power supply.

    When you buy a power supply buy one with good efficiency, enough amps/watts, and from a reputable brand.
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