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The right PSU for me?

By Rhodes132 · 9 replies
Mar 20, 2006
  1. My PSU has just messed up for some reason and i am now searching for a new one. I have very low money though ($30). Can anyone tell me a PSU that can withstand my computer w/o messing up and is $30 or less? It will be greatly appreciated. =)

    Here are my Specs:
    CPU: Amd Athlon 64, 1800 MHz 2800+
    Motherboard: Gigabyte GA-K8NS
    Motherboard Chipset: nVIDIA nForce3 250, AMD Hammer
    Ram Speed, size and #sticks: dual 512mb (total 1024mb) (PC3200 DDR SDRAM)
    GPU: nVIDIA GeForce FX 5700LE (256 mb)
    Case: Scorpio 868W case
    OS: Windows Xp Home Edition w/ Service pack 2
    fans: i have whatever fans that came with all that i bought which i think is 2 regular fans, 1 cpu fan, 1 LED fan

    Here are a few PSU's that have crossed my eyes. I really only want to spend under $30, but if it is a need for me to save money for a better one, i will.

    Sparkle Power (FSP350-60BT) 350-Watt Power Supply [$29]

    Antec (SL250S) 250-Watt Power Supply [$28]

    Enermax (EG365P-VD) (EG365PVD) 350-Watt Power Supply [$44]

    450 Watt PC/Computer Dual Fan PSU Power Supply Unit [$35] (something on ebay)

    Antec Smartblue 350 Watt power supply

    Antec Smart Power SP-350 Watt Power Supply

    Also if you have any suggestions, please tell me. Thank you!
  2. Rik

    Rik Banned Posts: 3,814

  3. KingCody

    KingCody TS Evangelist Posts: 992   +8

    any PSU under $30 is a piece of %&@! and will cost you more in the long run. It will not put out the wattage that it claims to be rated at, and whatever it actually can put out, it will not be stable power and will flucuate with changing system temps. It will lack a reliable protection circuit.

    To sum it all up, a cheap PSU could take out your whole system, which will cost you much much more than $30
  4. DonNagual

    DonNagual TechSpot Ambassador Posts: 2,404

    In general, yes. Cheap PSUs are a nightmare as kingcody says above.

    But there are some exceptions. Calculate how much you need using the link rik gave above, but I wouldn't recommend any less than 300w for your system. The main thing you want to confirm is how many amps the PSU is giving you on the +12v rails. You'll want at least 18amps, better to be in the 24amp range and up for your system. Those particular PSUs you are looking at are great PSUs. Sparkle, enermax, antec... they make quality PSUs.
  5. Rhodes132

    Rhodes132 TS Rookie Topic Starter Posts: 26

  6. DonNagual

    DonNagual TechSpot Ambassador Posts: 2,404

    That "generic and refilled" is not an Antec trueblue 480w. Not sure what's going on, but something is "off" there.

    There would be a HUGE difference in reliability and performance between the two listed. The first one has 36amps on the +12v rail, the second has 16amps.
  7. Rhodes132

    Rhodes132 TS Rookie Topic Starter Posts: 26

    As you can tell i dont know to much about the PSU's as i have another question. When it says that it comes with a PCI-E graphic connector or Supports PCI-E graphic cards, does this mean it only supports PCI-E and doesn't support AGP. Or do pretty much all PSU's support AGP and that just means it can support PCI-E as well?

    for instance a Antec Smart Power SP-350 Watt Power Supply.


    ATX12V version 2.0
    Dual 12V output circuitry provides added system stability and meets 240VA UL requirements and safety purpose: 12V1 for Motherboard and peripherals; 12V2 for processor
    ATX12V v2.0 compliance allows SmartPower 2.0 to consume up to 25% less power than standard power supplies, saving you money on your electric bill. 24-pin power connector with detachable 4-pin section.
    4 SATA Connectors support Serial ATA drives
    Flow-through dual 80mm fans (one intake and one exhaust)
    Unique Dual Fans Technology: exhaust fan starts to spin when the power supply reaches certain temperatures to ensure proper airflow, the second fan spins on power up
    Industrial grade protection prevents damage resulting from short circuits, power overloads, excessive current, low voltages and excessive voltages
    Increased 12V output capability for system components that consume more power from 12V rail
    PCI-E graphic connector
    Safety approvals: UL, CUL, TUV, CB, FCC Class B, CE, CCC
    Increased MTBF: 80,000 hours
    Size: 5.9" (W) x 3.4" (H) x 6.1"(D)
    PF value greater than 90% (EU only)
    Gold plated connector for superior conductivity

    Oh and one more question. You have told me that i should get a PSU that has atleasy 18A on the +12 V. If it has a Dual +12 V1 @ 10A and +12V2 @ 15A will that work good?
    -Which one of the two is better to have a single +12V or Dual +12V?
    -When its a Dual +12V can u pretty much add up the 2 to get the some of what a single +12V would get? So in the case above, its overall would be +12V @ 25A for the Dual and it would be a lot better then the single +12V @ 18A?
  8. vnf4ultra

    vnf4ultra TechSpot Paladin Posts: 1,388

    Yes, no special connector is needed for agp, but some pci-e cards do require a special connector. The pci-e ready psu also is fine for an agp system.

    Dual 12v is good, they sometimes don't quite add up completely(i.e. sometimes a dual 12v of 18a and 18a will "only" put out 32a combined on the 12v), but it is better to have two 18a 12v lines than one 12v line with 18a.
  9. Rhodes132

    Rhodes132 TS Rookie Topic Starter Posts: 26

    ahhh Ty and im guessing that when its says
    "Full Support of Dual Core systems (incl. Pentium D EE and Athlon 64 X2) & Dual CPU systems"
    means that it works for 1 cpu systems but it can support 2...
  10. vnf4ultra

    vnf4ultra TechSpot Paladin Posts: 1,388

    Yes, it supports a single cpu sytem as well.
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