Power Supply Consumption calculation

Discussion in 'General Hardware' started by plastiqued, Nov 26, 2002.

  1. plastiqued

    plastiqued Guest

    ASUS A7N8X DELUXE
    AMD XP2200+
    256 pc2700 sdram
    AOpen Geforce4 ti4200
    40gig hd
    cdrom
    cdrw
    so anyways im trying to computer the powersupply i need for new system
    I have an Enchance Electronics 300W PSU
    and i calculated my components as per se the chart in the amd builders' guide.
    I'm assuming the XP2200+ has around the same consumption as the XP2100+
    and that my Asus A7N8X consumes the same 23.5W as listed in the examples.

    PC Components_____ +3.3 Volt__+5.0 Volt__+12.0 Volt_Number_Power
    Hard Drive____________________0.80A_____2.00 A_____1_____28
    XP 2200+, 1.65 V________________________7.49 A_____1_____ 89.88
    RAM(256MBDDR)_______________2.00A_______________1_____20
    GeForce 4 Ti4200____6.00 A_____2.00 A_______________1_____29.8
    Motherboard________3.00 A_____2.00 A____ 0.30 A_____1_____23.5
    CD-RW_______________________1.20 A____0.80 A_____1_____15.6
    IEEE 1394_____________________1.60 A______________1_____ 8
    USB Devices__________________0.50 A_______________2_____5
    Floppy_______________________ 0.80 A_______________1_____4
    System Fan___________________0.25 A______________1____3
    Processor Fan_________________0.25 A______________1____ 3
    PCI Modem_____________________0.50 A________________1____ 2.5
    Keyboard____________________0.25A________________1____1.25
    Mouse_______________________0.25 A________________1____1.25
    Total Power Required = 234.78W
    Is this correct?
    all i need is 234?
     
  2. Zedric

    Zedric NTFS Guru Folding Team

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    Sounds about right. Which means you want a 350W+ PSU. This because:
    1. The ratings are often too high, at least on cheaper brands.
    2. The wattage on specific voltages (5V, 12V) may not be distributed the same way on a PSU as in this chart.