PSU Wattage??

Discussion in 'General Hardware' started by Geffy, Mar 10, 2003.

  1. Geffy

    Geffy Moderator Folding Team

    United Kingdom
    I have noticed a lot of people askin whether a PSU will have enough power to keep their PC alive

    Most of the time I give them a copy of this text file, but here it is in plain.
    Simply add up the different bits, I usually use the high end values. Then add about 100W just to make sure.

    AGP video card - 30-40W
    PCI video card - 30W

    AMD Athlon 900MHz-1.1GHz - 50W
    AMD Athlon 1.2MHz-1.4GHz - 55-65W
    AMD Duron 1.0MHz-1.3GHz - 50W
    AMD Athlon 1.47MHz-1.73GHz - 75W
    Intel Pentium III 800MHz-1.26GHz - 40W
    Intel Pentium 4 1.4GHz-1.7GHz - 65W
    Intel Pentium 4 1.8GHz-2.0GHz - 75W
    Intel Pentium 4 2.2GHz-2.4GHz - 90W
    Intel Celeron 1.0GHz-1.1GHz - 35W
    Intel Celeron 1.2GHz-1.4GHz - 50W

    ATX Motherboard - 35W-45W

    128MB RAM - 10W
    256MB RAM - 20W

    Optical Media
    24X or higher IDE CD-RW Drive - 35W
    32X or higher IDE CD-ROM Drive - 25W
    10x or higher IDE DVD-ROM Drive - 20W
    SCSI CD-RW Drive - 17W
    SCSI CD-ROM Drive - 12W

    Hard Drives
    5,400RPM IDE Hard Drive - 10W
    7,200RPM IDE Hard Drive - 13W
    7,200RPM SCSI Hard Drive - 24W
    10,000RPM SCSI Hard Drive - 30W
    15,000RPM SCSI Hard Drive - 45W

    Floppy Drives
    Floppy Drive - 5W

    Expansion Cards
    Network Card - 4W
    Modem - 5W
    Sound Card - 5W
    SCSI Controller Card - 20W
    Firewire/USB Controller Card - 10W

    Case Fan - 3W
    CPU Fan - 3W

    I've attached the file as well

    If people have more up to date info on DDR Ram, CPUs and GFx cards let me know and I will add them
  2. meisme

    meisme Guest

    So basically my 250 watt PSU that came with my computer wont be able to handle all my hardware (I reaalized lately that the computer wont shutdown standby or restart) Im concerned though I went to compaqs site and they dont have any info on upgrading my PSU all they have are replacement parts.
  3. Geffy

    Geffy Moderator Folding Team

    United Kingdom
    you should be able to get a Enermax or Antec PSU which should handle your needs, or goto Compaq site, and look for a shopping section. They might have more powerful PSUs there. Check the dimensions of your compaq PSU it should be the standard size, but you never know.

    I dont actually know what standard size, is. Mine is about 8.75 tall and 14.5 long, the width would have to be pretty much the same for PC case widths.
  4. meisme

    meisme Guest

    I checked there site, and the PSU's that they have are direct repacements they have no upgrades, I'll be contacting customer support to see what they have to say.
    Thanks for the quick reply.
  5. neo

    neo Guest

    so in that case I need 400 w of psu, right now I have 300w antec. My pc working great o/c cpu and 9700 pro. but when I attach a little 12v fan on mobo the da*e asus probe(when I turn it on) keep showing up with the Voltage meter where the 12+v is over 13.184 points(After I disconneted the fan).