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How to Choose A Power supply
this is a thread that i made for another forum and i decide to post it here because nilpo wanted people to post more content
![]() First off, I have to thank Komet (he's not on this forum) and Snod blatter This is the PSU thread for all of you who want/need to buy a new Power Supply. The first thing you want to notice, when you see on a videocard box or something , that the psu requirements are like 450watts with 34amps on the 12v rail. It doesnt mean that the card needs all that for the graphics card itself, its normally for the entire system that you have. Calculating your minimum power needs for a power supplie --------------------------------------------------------- Go here to calculate your wattage needs: Power Supply Wattage Calculator The point of having more than one rail for the +12v is thus: Manufacturers did the dual,triple etc rail because having lots of amps (like say more than 34a with 70% efficiency could blow up the transistors), so they made the dual rails to balance the load on the transistors. see how much you need and add about 35-50watts and you will be able to see how much wattage you will need. Good power supply brands(the ones that people know): --------------------------------------------------------- Seasonic Antec Enermax Liberty Fortron (FSP Group) OCZ PC Power & Cooling Silverstone Tagan Sparkle Scythe Zippy Emacs The crappy ones: --------------------------------------------------------- Q-Tec(all over ebay) Powmax & Diablotek(both made from Leadman) Powerup(more like power down) ATADC JPAC Atrix Just PC any generic psu Logisys Raidmax(cheap ones) Ultra Xion Turbo links (the ones that comes in the Aspire cases) Okia Apex Deer Allied Achieve Allied Codegen Demon Devanni Dynapower Eagle Epower L&C Linkworld MGE Turbo X-superalien X-treme Magna The OK ones: --------------------------------------------------------- Cooler Master Enermax Thermaltake (the cheapest ones,the costy ones are much better, but have weak +12 rails) Aerocool (not bad at all) Sunbeam Rosewill Kingwin epower/tagan(the tagan series) TOPOWER Channelwell Power Supplies that no one knows of, but are good: --------------------------------------------------------- Super Flower In Win (power man series, made with fortron parts) Sytrin Nextherm Enhance I-Star Between ok and crap: --------------------------------------------------------- Aspire(rated at high wattage with low rails and a bit low on the voltages) Enlight Coolmax Rosewill Problems with some good psus out there: --------------------------------------------------------- Antec: a little low on the voltages on rails Enermax: they tend to die instantly without any unstability before Power PC & Cooling: Real loud! Sunbeam: (Sunbeam NUUO), fans may develop noisy/raspy bearings. Find The real maker of your Power Supply : --------------------------------------------------------- Like for example, if it says its an antec it doesnt mean its made from antec. So i found a list on www.extremeoverclocking.com of some popular psu numbers so on the psu sticker theres a kind of backward RU with a little code under it that starts with a E so i got this L&C psu it says: ![]() RU e164554 so on the list it says it made from L&c The list of popular psus: --------------------------------------------------------- E104405 Sea Sonic Electronics Co Ltd E104407 Leadman Electronics Co Ltd E119368 Samsung Electro-Mechanics Co Ltd E126556 Taiwan Youngyear Electronics Co Ltd E130843 Topower Computer Industrial Co Ltd E131500 Pc Power & Cooling Inc E131881 Delta Electronics Inc E134014 Enermax Technology Corp E134129 Powertech Systems Co Ltd E138711 Moretec Electronics Industrial Co Ltd E141182 Morex Information Enterprise Co Ltd E141400 Seventeam Electronics Co Ltd E142789 Nidec Potrans Corp E143709 Hipro Electronics Co Ltd E143756 Zippy Technology Corp E144195 Sirtec International Co Ltd E147055 Mapower Electronics Co Ltd E156513 Power-Win Technology Corp E161451 Channel Well Technology Co Ltd E161557 Fortrex Electronic Co Ltd E161936 Nipron Co Ltd E164554 L & C Technology Inc E166947 Enhance Electronics Co Ltd E172499 Win-Tact Electronics Corp E175472 Fore Point Industrial Ltd E175856 Delta Electronics Inc E176105 Antec Inc E176239 Etasis Inc E178102 Jou Jye Electronic Co Ltd E178768 Wintech Electronics Corp E181356 Shenzhen Chi Yuan Industrial Co Ltd E185650 King Case Industrial Co Ltd E186010 Atng Power Co Ltd E190414 Fsp Group Inc E191395 Delta Electronics (Thailand) Public Co Ltd E193726 Ablecom Technology Inc E193807 Powertech Systems Co Ltd E199068 Delta Electronics Inc E199442 Heroichi Electronic Co Ltd E199529 Macron Power Technology Ltd E203196 Deer Computer Co Ltd E211481 Codegen Technology Co Ltd E217431 Delta Electronics Inc E242429 Super flower and TTGI E243823 OCZ Technology E313881 Delta Electronics Inc Measuring voltages on psu rails : --------------------------------------------------------- this is a how to measure voltage rails to see if your psu is giving correct votages. if the voltages are too low your system could be unstable and if it is to high the parts could die faster. im taking this article off a devhardware thread (Devhardware Forum) it was made by madhyena.(yeah i stole some of your pictures sorry) yes some motherboards out there can measure rails and you can see them with speed fan but they are not always accurate. so with this test you will be sure if its giving the correct voltage. NOOB CAUTION : if you are a total noob i do not recommend doing this because if you short something out, it could damage your psu. ok thats with what connectors you'll be measuring rails, now if you dont know how to use a multimeter well i dont think your supposed to have one. ![]() now to measure the voltages set your multimeter to 20 , put the black wire in a ground in the molex or mobo connector(in a black wire) and the red in the voltage wire you will be measuring and the multimeter will give you the voltage so boot your comp and measure the voltages in post,windows loading,idleing,and gaming and if there too low or too high i recommand you to change your psu. motherboard : now to measure curent on the motherboard connector, do it like this : ![]() a molex : ![]() ok these are the voltages that your supposed to have between the minimum and the maximum ![]() power supply suggestions --------------------------------------------------------- Cheap range : 1.IN WIN PowerMan 410 watts 39.99$ Link 2.Fortron 400watts pci-e ready 41.50$(good choice) link 3.Antec smartpower 350watts 44.99$ link Mid range 1.Fortron 500watts pci-e ready 89.99$ Link 2.Schythe 450watts 83.00$(good buy) Link 3.Enermax noisetaker 485watts 74.99$ Link High end 1.Seasonic 600watts SLI ready 159.99$ Link 2.PC Power & Cooling sli ready 510watts 229.99(good buy) Link 3.OCZ 700watts sli ready 174.99$ Link SLI Mid range 1.Enermax All In One Noisetaker 600watts 129.99$ Link 2.Antec NeoPower 550watts 118.00$(good choice) Link 3.Fortron 600watts 139.99$(great choice) Link SLI High end 1.ISTAR USA 215.00$ Link 2. PC Power & Cooling 510watts 229.99 Link Crossfire Mushkin 650watts 209.99$ Link i'm open to suggestions and if you want to add some psu's in there well tell me. Last edited by theblackmages : July 7th, 2006 at 12:32 PM. |
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I like it, definitely going on my bookmark list for when I buy a PSU or suggest one.
What about "APEX" PSUs? I've got a link to one I might get. if it helps |
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Sticked thread.
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@mages: Maybe you should talk to pandaking and try and merge his thread with yours so we can have one comprehensive list of PSUs?
Anyway, excellent job nonetheless!
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How is Enermax in the "OK ones" list and the Enermax Liberty (a specific PSU) in the "Good ones" list? I'd put Enermax in the good list and take it out of okay. I've had nothing but good experiences with Enermax for the past five years since 350W PSUs were awesome...
And just one last innacuracy which I found. Right before the image that shows how to measure the 3.3V line your said "how to measure the current. It is voltage. Not too important, but it could be misleading, considering that people reccommend to have at least 20A on the 12V line, etc. Great sticky, good job ![]()
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The Enermax Liberty is indeed an awesome PSU, if a tad pricey. However, your average run-of-the-mill Enermax is not actually that great... they're pretty damn good, but they're not the greatest. Enermax used to rate their older PSU's at temperatures of 0*C, thus in a case they never lived up to their wattage claims...
The newer ones are better though, and the Liberty is the best of them all. Thus, having the Liberty in the same category of PCP&C and Seasonic and the like seems right to me, and having your average Enermax in the same category as Topower/Tagan/Channelwell also seems right to me. People don't generally have problems with any of those, either... |
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