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PSU Question

Discussion in 'General Hardware' started by Baker, 1 Feb 2006.

  1. Baker

    PermaBanned

    Joined: 27 Sep 2004

    Posts: 937

    Currently I have this:

    420W TurboLink PSU
    Asus nForce4 mobo
    AMD64 3700+ SD CPU
    2GB OCZ RAM
    XFX 6600GT
    80GB SATA HDD

    and it all runs fine, CPU overclocked to 2.75GHz without needing to change the voltages at all..

    If I were to replace the 6600GT with, for example, a 7800GT, would I be likely to need a new PSU? I am not considering a purchase at least for another 5 months so don't need any "don't get that, get this:" advice, just need a basic yes, no, or "you'd need to try it and see."
     
  2. PieEater

    Mobster

    Joined: 18 Oct 2002

    Posts: 3,758

    Location: Devon

    From a practical point of view I'm guessing your PSU doesn't have the 6-Pin PCI-E power connectors tha the 7800 will need. I know you can get adapters but it looks like these require 2 x 4-pin Molex connections to provide enough power, so have you got enough spare connectors for this?

    From an output perspective it would appear that 400w is the minimum reccomended for a single card (SLI needs more) so you should be OK.
     
  3. Baker

    PermaBanned

    Joined: 27 Sep 2004

    Posts: 937

    I think it does have these pins - not entirely positive but there are a few 6 pin adapters that didn't have a place to go when I built it up last month.

    If I was buying a new GPU I'd probably buy a new PSU anyhoo. Thanks for input.
     
  4. nikebee

    Capodecina

    Joined: 9 Nov 2004

    Posts: 14,003

    Location: Pembrokeshire

    answered your own question then ;)

    but as PieEater said, with high-end graphics cards they often state that a 400w PSU is a bare minimum (if you have a decent kit with it as well).
    obviously you dont want to name names about what to buy, but i'd look at getting something around 500w possibly 600w (this would leave room for future upgrades)
     
  5. Baker

    PermaBanned

    Joined: 27 Sep 2004

    Posts: 937

    "Probably," but I want to see what options I have, so I have plenty time to make my decision. I will be getting a large influx of money (harvest time :D) around September, but still want to spend the minimum possible to get more performance. :p
     
  6. PieEater

    Mobster

    Joined: 18 Oct 2002

    Posts: 3,758

    Location: Devon

    Perhaps you'd best check. The combined rails on this PSU apparently only give about 300w so actually it may well struggle.
     
    Last edited: 2 Feb 2006
  7. Amps

    Mobster

    Joined: 23 Mar 2003

    Posts: 2,652

    Location: Scotland

    I doubt that psu will power that pc.
    well it wouldnt with a dfi motherboard.