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Thread: Need advice on PSU for Atom

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    The CX400 and S12-II 330W use the same platform. Only major difference is wattage. Just go with the cheaper one.
    Main: i5 2500K@4.6GHz w/Zalman CNPS10X Performa, Intel DZ68BC, 8GB G.Skill DDR3-1600, PNY GTX 470 + EVGA GTX 470, ASUS Xonar DX, ADATA S510 120GB, Samsung 1TB F3+1TB F1+2TB F4, Kingwin LZG 1kW, Lian-Li PC-9F, Dell U2212HM+S2209W, Win7 Professional.
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    So, basically they're both just the same PSU with similar qualities?
    Well, then maybe I'll go for the CX, it's just about 7 $ cheaper though.

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    If the CX is cheaper, there's no reason to get the Seasonic.
    Main: i5 2500K@4.6GHz w/Zalman CNPS10X Performa, Intel DZ68BC, 8GB G.Skill DDR3-1600, PNY GTX 470 + EVGA GTX 470, ASUS Xonar DX, ADATA S510 120GB, Samsung 1TB F3+1TB F1+2TB F4, Kingwin LZG 1kW, Lian-Li PC-9F, Dell U2212HM+S2209W, Win7 Professional.
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    Pull a bestec ATX-250-12Z out of a emachines or compaq or HP, and recap it. They are actually quite well built, reliable, quiet, and run their ratings and do it cleanly. You can also never go wrong with delta. I would suggest a Delta DPS-300KB.

    Problem with both of those is efficiency. They are not that efficient, but you are going to be pulling so little current that it would still be cheaper to get a bestec 250-12Z or one of those delta's on ebay for $10, and it would still take a while to get to the point where the cost of electricity plus the cost of the psu is more than the cost of a more efficient, but more expensive psu.
    Quote Originally Posted by JFK
    The American, by nature, is optimistic. He is experimental, an inventor and a builder who builds best when called upon to build greatly

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    Quote Originally Posted by 370forlife View Post
    Pull a bestec ATX-250-12Z out of a emachines or compaq or HP, and recap it. They are actually quite well built, reliable, quiet, and run their ratings and do it cleanly. You can also never go wrong with delta. I would suggest a Delta DPS-300KB.

    Problem with both of those is efficiency. They are not that efficient, but you are going to be pulling so little current that it would still be cheaper to get a bestec 250-12Z or one of those delta's on ebay for $10, and it would still take a while to get to the point where the cost of electricity plus the cost of the psu is more than the cost of a more efficient, but more expensive psu.
    Considering the fact that the OP seems to be a novice, suggesting that he buy a low-quality PSU and recap it doesn't strike me as a particularly helpful suggestion, especially since you yourself mentioned the fact that those PSUs aren't very efficient which was one of the specific requirements mentioned in the first post.
    Main: i5 2500K@4.6GHz w/Zalman CNPS10X Performa, Intel DZ68BC, 8GB G.Skill DDR3-1600, PNY GTX 470 + EVGA GTX 470, ASUS Xonar DX, ADATA S510 120GB, Samsung 1TB F3+1TB F1+2TB F4, Kingwin LZG 1kW, Lian-Li PC-9F, Dell U2212HM+S2209W, Win7 Professional.
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    Hello.

    I've had excellent luck over here with several Seasonic S12-330 PSUs in systems ranging from a 21w aOpen MoDT (Mobile on Desk Top) system all the way up to C2D 8200 and an 84w P4 540.

    I cannot speak for Corsair, but the S12-330s I've seen use United/Nippon Chemi-Con capacitors in the critical areas.

    The choice of capacitors is critical to long term stability. It might be a good idea to find out what's in the Corsair. Probably something decent.

    An older one came in for upgrades last month. The S12-330 passed a load test on a scope OK and the caps looked OK so it went back in.
    Even at full load the fan made barely any noise.

    You have the same situation that I often find myself in:
    Trying to find a small-enough PSU that's well made and reasonably efficient at lower loads.

    Can't anyone make a nice 150w PSU? (that doesn't have a "450w" sticker on it)
    Keri
    The More You Learn, The Less You Know!

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    Quote Originally Posted by heka View Post
    I can't find PSUs with output below 300W from where I live , so I can't say anything much about it.

    But I see Corsair CX400W with a good price. How does it compare to Seasonic S12-II 330W?
    Hard to say. They're both manufactured by Seasonic, but I'm not certain if they're built on the same platform or not. For such a low-power build, I'd probably pick the Seasonic. On the other hand it'll probably cost more to buy a new PSU than the power you'd "waste" using the (presumably) less efficient at low loads TX650, but of course you could sell the TX650, or use it to keep your current rig alive as an additional computer.

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    Quote Originally Posted by KeriJane View Post
    Can't anyone make a nice 150w PSU? (that doesn't have a "450w" sticker on it)
    Keri
    Those 150W PSU's with 450W stickers offer lousy performance at any load. Only thing they're good for is load testing to see if they catch fire when they fail


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    Quote Originally Posted by KeriJane View Post
    Can't anyone make a nice 150w PSU? (that doesn't have a "450w" sticker on it)
    If they did it would probably just end up being an under-rated 300W PSU anyway, so I don't really see a point.
    Quote Originally Posted by RagingDragon View Post
    They're both manufactured by Seasonic, but I'm not certain if they're built on the same platform or not.
    They are.
    Main: i5 2500K@4.6GHz w/Zalman CNPS10X Performa, Intel DZ68BC, 8GB G.Skill DDR3-1600, PNY GTX 470 + EVGA GTX 470, ASUS Xonar DX, ADATA S510 120GB, Samsung 1TB F3+1TB F1+2TB F4, Kingwin LZG 1kW, Lian-Li PC-9F, Dell U2212HM+S2209W, Win7 Professional.
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    She wasn't saying to use a cheapo power supply, she was just saying why can't any good company like delta or seasonic make a good 150W psu, as all the 150W psu's out there are made by shoddy companies and sold as "450W".
    Quote Originally Posted by JFK
    The American, by nature, is optimistic. He is experimental, an inventor and a builder who builds best when called upon to build greatly

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