Question: power supply for 8800gtx

Discussion in 'Graphics Cards' started by noels7, Jun 12, 2007.

  1. noels7

    noels7 OSNN One Post Wonder Political User


    I am thinking of updating my video card. Am not sure if physical dimension of card or my system is suitable for such an upgrade. Will upgrade to vista when SP1 is released. All drivers/bios are current.

    My computer is used for flight simulation (MFSX) and general computer usage.

    Leadtek suggest 450watt power supply minimum requirement for their 8800gtx 768mg card. My research reveals conflicting/confusing opinions.

    Specifications for my Antec power supply are:
    Max. Load

    +5V +12V1 +12V2 +3.3V -12V +5Vsb
    35A 17A 19A 32A 0.3A 2.0A

    * +5V, +12V1, 12V2 and +3.3V maxload: 480Watts
    * +5V and +3.3V combined output: 180Watts

    Any any advice/assistance from users of 8800gtx cards would be appreciated.


    WinXP SP2
    Antec TX1050B /1088amg case.
    Antec Smartpower 2.0 500 watt p/supply
    Nvidia GForce 7900GT 256mg Nvidia 94.24 drivers
    Asus Dual core Athlon 64X2 5200
    Asus motherboard M2N-SLI deluxe (on board sound activated)
    Corsair 4gig (DDR2-800 DDR2 SDRAM)
  2. LeeJend

    LeeJend Moderator

    Fort Worth, TX
    If it was a Truepower II model I'd say ok. The Smart Power are a "less robust" model.

    I ran it through the PSU calculator at:

    And you're right on the edge. With a Smart Power model I'd say upsize the PSU.
  3. Shamus MacNoob

    Shamus MacNoob Moderator Political User

    L'Ile Perrot Quebec
    I am going to say you need more , i use the 8800GTS 640mb and I have a 550watt Ultra Xconnect 2 SLI ready power supply no problems ...but for the GTX I say you need at least what I have if not more.