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Power supply (PSU) concerns

By truffles
Mar 5, 2002
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  1. Jamesqin

    Jamesqin TS Rookie Posts: 34

    right, fixed it it is M3A78 PRO.. ok, 550 it is, I might be upgrading other componenets and I read somewhere that gaming PC should not go under 500..
     
  2. BMfan

    BMfan TS Guru Posts: 481   +49

    I would rather have extra power than be short of power.
    A 550w would be perfect,i had 2 ATI 4770's in crossfire with a 550w PSU and never had a problem with power,even when i overclocked everything in the PC.
     
  3. Rage_3K_Moiz

    Rage_3K_Moiz Sith Lord Posts: 7,286   +24

    A good-quality 500-550W PSU will do; that Arctic Cooling unit is a very good choice, being built by Seasonic and delivering a decent (for its price) 33A on the +12V rail.

    The Corsair 450VX has the same specs however and comes with a larger warranty, which makes it a better choice if it can be found for around the same price as the Fusion PSU. The only con I see with it is that you'll need a Molex-to-PCIE converter since the 5850 needs two power connectors. It should still deliver enough power for your system though, since a high-end system with an HD 5850 will not draw more than 300W or so; you should easily be on the safe side IMO. Read the links for proof of the power consumption.

    http://www.tomshardware.com/reviews/radeon-hd-5850,2433-13.html
    http://www.madshrimps.be/vbulletin/f22/amd-radeon-hd-5870-5850-power-consumption-summary-66340/
    http://hothardware.com/Articles/AMD-ATI-Radeon-HD-5850-Performance-Review/?page=10
    http://techreport.com/articles.x/17652/9
     
  4. Jamesqin

    Jamesqin TS Rookie Posts: 34

    hmm I see, I decided to go either with this Arctic Cooling or with Corsair VX550 550W to be sure if I upgrade later on. So which one of those ? Corsair has 3 years larger warranty, but is like 25 bucks more expensive.. and would I need that, whatever converter on this corsair as well ?
    thanks!
     
  5. BMfan

    BMfan TS Guru Posts: 481   +49

    I would go for the Corsair VX550 and you wont need the molex to 6 pin converter.
     
  6. Luna01

    Luna01 TS Rookie

  7. Rage_3K_Moiz

    Rage_3K_Moiz Sith Lord Posts: 7,286   +24

    Seconded.
     
  8. AlbertLionheart

    AlbertLionheart TechSpot Chancellor Posts: 2,714

    I got myself one of these last month as I decided that the old one which only tested the 20/24 pin output was not telling me the truth. This thing works a treat and well worth the extra

    http://www.ebuyer.com/product/179997
     
  9. GrumpyWookie

    GrumpyWookie TS Rookie

    Hey everyone, just recently joined these forums so I'm not quite so sure if this question would be bested placed in this topic. I've just recently ordered a GTS 250 video card along with a BFG 550 power supply after looking around for some new upgrades.

    BFG GS Series BFGR550WGSPSU GS-550 Power Supply - ATX, 550 Watts, 140mm Silent Fan - That is the fan I've ordered.
    As for the specs that are going to use these parts is a pre-built SR5710Y model using an MCP61PM-HM (Iris8) motherboard. They're replacing a stock 250w psu along with an intergrated 6150 SE gpu. The main concern I'm having or can just be paranoia is that the PSU is not sufficent enough or possibly have enough connectors for this tower. I know it has enough SATA cables, but after looking up the internal connectors for the motherboard I'm not sure has other cables that are needed.
    If any other info is needed, I'll post it :S
    Thanks in advance. Oh and if by chance the above psu isn't sufficent enough the budget for a replacement is about 60$ if anyone can find a suitable model. :3;
     
  10. raybay

    raybay TS Evangelist Posts: 10,716   +6

    Power Supply Testers don't tell you much... and they are not accurate in details. The BFG is fine. The Corsair is better.
     
  11. Rage_3K_Moiz

    Rage_3K_Moiz Sith Lord Posts: 7,286   +24

    This is a great choice if you can afford it, otherwise this PSU is the best for $60, and it's actually $10 cheaper with a promo code.
     
     
  12. Simpleton

    Simpleton TS Rookie

    Hi guys i was just wondering would a Arctic Power 500w psu be ok for my setup?

    Intel Dual Core E5700 3.0GHz
    ASUS P5G41T-M LX2/GB
    Rendition 2GB DDR3
    Nvidia GeForce 8800 GTX (768)MB
    250GB HDD

    Thanks
     
  13. AlbertLionheart

    AlbertLionheart TechSpot Chancellor Posts: 2,714

    I would spend the extra pennies and go for at least 750 watt if you can.
     
  14. BMfan

    BMfan TS Guru Posts: 481   +49

    I would say get yourself a decent 550w if you can.A 750 is overkill for your PC unless you plan to upgrade to a sli\crossfire set up later.
     
  15. Simpleton

    Simpleton TS Rookie

    BMfan - I would say get yourself a decent 550w if you can.A 750 is overkill for your PC unless you plan to upgrade to a slicrossfire set up later.

    Cheers mate will get it today once I sort my pc start up problem :)
     
  16. Arris

    Arris TS Evangelist Posts: 4,568   +103

    Ran a similar spec machine to simpleton's on a quality 450W psu before, so 550W would be my recommendation too. Gives you a little extra for future additions to the system. Note that not all PSUs rated to xxxW will actually perform to that output under load. It's worth investing in the quality brands such as Corsair, Antec, Enermax and a few others. It's worth the little extra to get something that will definitely do the job.

    My machine was running a Core2Quad Q6600@3Ghz, 4Gb Ram, Nvidia 8800GTX, 500Gb 7200rpm HD. Later it ran an ATI 5850 1Gb card.. all on a Shuttle 450W PSU.
     
  17. Rage_3K_Moiz

    Rage_3K_Moiz Sith Lord Posts: 7,286   +24

    Arctic Power is a rubbish low-end brand. Invest in a better quality PSU; be Quiet!, Antec, Corsair (except the CX series), Seasonic, Silverstone, Seventeam, Etasis, Zippy and OCZ are some of the good brands to consider.
     
  18. Simpleton

    Simpleton TS Rookie

    Thanks guys but I dnt have the money ATM so the arctic power was all I could afford. I will look into get one of those higher brand psu's in a couple of months.

    Cheers
     
  19. Tommygunn

    Tommygunn TS Member Posts: 90

    How to eliminate the PSU as a suspect part? Is it shorting?

    I have recently encountered a problem with my desktop and some people have suggested that it may be a short started in the PSU, going via the case, and into the ground contacts of the Mobo.

    Is there any way, through the use of basic tools and gadgets i.e. voltmeter, tongue etc, to tell if the problem is originating with my PSU or if it is putting out power perfectly normally and fully isolated.

    For your info I have an Enermax Liberty 500W which is 4 years and 9 months old.

    I really don't want to bin 3/4 of the components and buy a whole load of new kit, so to eliminate the PSU as a problem would be a great help.

    Cheers,
    Tom.
     
  20. AlbertLionheart

    AlbertLionheart TechSpot Chancellor Posts: 2,714

    If you have the slightest concern about the PSU, replace it. Don't even hesitate with one nearly 5 years old!
     
  21. Tommygunn

    Tommygunn TS Member Posts: 90

    Could I not, to see if there is any Voltage leaking from the casing, take my Voltmeter touch one electrode to the PSU case and the other electrode to the house earth connection and see if there is a short i.e. a flow of electricity?

    Tom.
     
  22. Tmagic650

    Tmagic650 TS Ambassador Posts: 20,929   +167

    I have an ATX power supply on the bench that shows 120 Volts on the supply's case, when isolated from the computer. One of the filter capacitors connected to the 120 v line is shorted...
    Tommygunn, just replace the power supply
     
  23. Tommygunn

    Tommygunn TS Member Posts: 90

    I bought an Enermax Modu87+.

    Tom.
     
  24. Tmagic650

    Tmagic650 TS Ambassador Posts: 20,929   +167

    So the computer is working fine now?
     
  25. Tommygunn

    Tommygunn TS Member Posts: 90

    Well, yeah, after I also dumped the MB and RAM to be be on the safe side..

    Tom.
     


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