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550W seasonic psu good for this build?

Is the Seasonic SS-560KM 560W ATX12V V2.3/EPS 12V V2.91, 80Plus Gold Certified Power Supply a smart buy for the following build?

GPU: geforce GTX660 2GB
CPU: Intel Core i5-3350P
RAM: 2 x 4GB DDR3 1600 SDRAM
MOBO: gigabyte Z77X-D3H
FANS: Hyper 212 EVO + 3 case
HDD: WD 1TB 7200RPM 64MB SATA 6.0Gb/s
SSD: Samsung 840 Pro 128GB
one 24x DVD burner

-and if the Seasonic SS-560KM is adequate for this build, is there any room left in the power budget to add additional expansion cards at a later time?
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  1. Best answer
    Its more than sufficient for that single card build, the GTX 660 only requires a 450w PSU, although for two cards, I'd be tempted to up it to 600-650w for absolute peace of mind for later expansion. It always a good idea to have some excess to avoid running the PSU at full load to extend its life.

    Assuming of course, that by expansion cards, you mean a second gtx 660
  2. Sounds reasonable. I've read that this seasonic power supply is really overbuilt; but I always feel as if though I should overshoot my power requirements by a substantial margin in case I want to upgrade and add components later on.

    -Thanks

    These articles demonstrate how overbuilt the supply really is, btw:
    http://www.hardwaresecrets.com/article/Seasonic-X-Series-560-W-Power-Supply-Review/1118/10
    http://www.anandtech.com/show/4217/seasonic-xseries-560w/6
  3. Overbuilt can sometimes be a good thing.

    You never want to skimp on the PSU because, if that one part is bad quality or faulty... It can fry your entire system... Bringing your wallet to tears ;)
  4. That PSU is more than enough to power your system.

    It will power a better card when you want to upgrade.

    http://www.realhardtechx.com/index_archivos/Page362.htm


    Nice Setup you have!!!
  5. SR-71 Blackbird said:
    That PSU is more than enough to power your system.

    It will power a better card when you want to upgrade.

    http://www.realhardtechx.com/index_archivos/Page362.htm


    Nice Setup you have!!!


    Nice chart!

    I notice that the two most popular free CPU power calculators don't seem to really agree with each other very well. The ASUS calculator (http://support.asus.com/powersupply.aspx) tends to estimate a bit high and the OuterVision Extreme calculator (http://www.extreme.outervision.com/psucalculatorlite.jsp) seems to estimate a bit low. It's kind of baffling.
  6. drtoast said:
    Its more than sufficient for that single card build, the GTX 660 only requires a 450w PSU, although for two cards, I'd be tempted to up it to 600-650w for absolute peace of mind for later expansion. It always a good idea to have some excess to avoid running the PSU at full load to extend its life.

    Assuming of course, that by expansion cards, you mean a second gtx 660


    drtoast said:
    Overbuilt can sometimes be a good thing.

    You never want to skimp on the PSU because, if that one part is bad quality or faulty... It can fry your entire system... Bringing your wallet to tears ;)


    After reviewing the excellent chart provided by SR-71 Blackbird, one could conclude that even though a high quality 560W Seasonic psu can definitely cover the suggested system build, it doesn't seem to leave a comfortable amount of wiggle room for a worthwhile graphics card upgrade in the future. Since it turns out that you can buy a seasonic x650 gold (extremely efficient at low loads) for almost exactly the same price as the 560 watt model, the choice of the 650 watt seasonic is a no brainer.
  7. http://www.newegg.com/Product/Product.aspx?Item=N82E16817207014


    XFX Core Edition PRO650W (P1-650S-NLB9) 650W ATX12V 2.2 & ESP12V 2.91 SLI Ready CrossFire Ready 80 PLUS BRONZE Certified Active PFC Power Supply


    Motherboards.org Top Value Award

    Made by Seasonic
  8. Thank you for the vote sir, It's given my 6/5 on badges and finally allowed it to display with the buggy system atm :P
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