Power supply question

hi all . i am about to buy new system and i want to know if my LIBERTY ENERMAX ELT400AWT can supply the phenom II 965 , MSI 790FX-GD70 mobo ,2 * ddr3 ram, ATI 4890 , and 4-5 sata drives with power.
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  1. kind of like driving a mini @ 90 milies per hour, yes it can, but i wouldnt

    get a 550w- 650w cause your proberly update again in the nexted 3-5 years
  2. Here is a link to a Tom's Hardware article showing total power consumption as measured at the electrical wall outlet (mains) for a pc system with one 4890 video card installed:

    http://www.tomshardware.com/reviews/radeon-hd-4890,2262-13.html

    Here is a link to the xbitlabs.com technical review:

    http://www.xbitlabs.com/articles/video/display/radeon-hd4890_6.html#sect0

    Finally here's a link to the anandtech.com technical review:

    http://www.anandtech.com/video/showdoc.aspx?i=3539&p=22

    The 4890 video card is not a power hungry card. In theory you should be okay providing there is sufficient current (amps) on the 12 volt rail(s). However, I could not find a technical review of the power supply. In addition, it appears as if the power supply was first introduced in 2005 and that it is not 80+ certified.

    The general rule of thumb is that a high quality 500 to 550 watt power supply with sufficient current (amps) on the 12 volt rail(s) can easily power a system with any single video card made.

    Brands such as Corsair, PC Power & Cooling, Seasonic, and a few others have a reputation for high quality power supplies. They consistently earn high marks in technical reviews. They are very stable, reliable, and come with 5 year warranties.
  3. thanks all for your suport.i''ll try with the enermax 400 first.i just hope that nothing will be burn...and then if i must i'll buy another.
  4. Looks like a good PSU. 2 20a 12v rails, and Enermax PSU's are usually high quality.
  5. ShtBrix said:
    Looks like a good PSU. 2 20a 12v rails,

    That's each rail max. Total is about 32 amps. That's about average for a good 400 watt PSU, but it's a long way from 40 amps.
  6. I know.

    :)
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