[RESOLVED] How do I choose a Power Supply (PSU)
Home | Reviews and Features | Special Reports | Forums |

Results 1 to 8 of 8

Thread: [RESOLVED] How do I choose a Power Supply (PSU)

  1. #1
    Join Date
    Feb 2008
    Posts
    4

    Thumbs up [RESOLVED] How do I choose a Power Supply (PSU)

    I am building an 8 disk RAID and I've decided on the following hardware:

    1 - AMCC 3ware 9590SE-8ML PCIe X4 Raid Controller
    8 - Western Digital Caviar WD3200AAJS SATA 320GB Hard Drives
    8 - Antec HD COOLERs
    1 - Western Digital Caviar SE WD800JB 80GB Boot HD
    1 - Amtrade 2001-ATX 13 HD server case
    1 - MSI K9NBPM2-FID AM2 Motherboard
    1 - AMD Athlon 64 LE-1620 2.4GHz CPU
    2 - 1GB 240-Pin DDR2 800 (Total 2GB RAM)
    1 - SONY Floppy Drive
    1 - Sony 16X DVD ROM

    How do I determine what I need in the way of power supply? I'm pretty sure I need 520 watts or better, but how many rails? How many amps on the various voltage lines?

    Also, if anyone has any opinions about where I'm going TERRIBLY WRONG, I would love to know.

    Obviously, I'm not going for extreme performance, I'm going for large capacity with with an emphasis on reliability and fault tolerance.

  2. #2
    Join Date
    Mar 2000
    Posts
    27,266
    May be of interest,
    Quote Originally Posted by Justintime
    "I know nothing."
    Cheers.

  3. #3
    Join Date
    Feb 2008
    Posts
    4
    Quote Originally Posted by Shinma
    May be of interest,
    Quote Originally Posted by Justintime
    • eXtreme Power Supply Calculator Lite v2.5
    Been there. That's why I mentioned that 520 watts or better seems appropriate. That site also says:
    The recommended total Power Supply Wattage gives you a general idea on what to look for BUT it is NOT a crucial factor in power supply selection! Total Amperage Available on the +12V Rail(s) is the most important, followed by the +5V amperage and then the +3.3V amperage.
    However, they don't indicate how you determine what adequate amperage on those voltage lines is, nor how to determine same. That's why I asked:
    Quote Originally Posted by FuzzyBunnyFeet
    ... how many rails? How many amps on the various voltage lines?

  4. #4
    Join Date
    Feb 2005
    Location
    Oklahoma, USA
    Posts
    1,253
    Truthfully, I think they pop that up on there so you pay for the pro calculator. A good PSU should be able to give what you're needing.

    As long as you don't get some cheapy PSU, you should be fine. Getting a 620 watt or something will do well. Just make sure you get something powerful, and not bare minimum.
    Intel 2500k @ 4.5 GHz | Sapphire 6870 1GB | 8GB DDR31600 | Gigabyte Z68A-D3H-B3 | 640 GB WD Caviar Black | 500GB WD something | ASUS Xonar DS | Logitech Z-5300e | Logitech G500 | Das Keyboard Cherry MX Brown | Dell S2740L

  5. #5
    Join Date
    Jun 2000
    Location
    Vancouver, B.C., Canada
    Posts
    8,097
    Get a good brand like Seasonic, Corsair, Enermax, PC Power & Cooling, Antec, Silverstone. Some of the generics cannot deliver their advertised output on a continuous basis.

  6. #6
    Join Date
    Feb 2008
    Posts
    4

    Thumbs up

    After reading a rather comprehensive article about PSUs titled PSU Selection Guide (PSU 101-102) on the Xtreme CPU website, I've decided to go with the Corsair CMPSU-750TX.

    The salient features that lead to this choice are:
    1. It is a Single Rail PSU.
    2. My power requirements should fall within the sweet spot of its noise level and efficiency curves.
    3. It has 8 SATA connectors.


    I heartily recommend reading the PSU Selection Guide (PSU 101-102) article to anyone who is trying to figure out which PSU to buy.
    Last edited by FuzzyBunnyFeet; February 3rd, 2008 at 11:31 PM.

  7. #7
    Join Date
    Jun 2000
    Location
    Vancouver, B.C., Canada
    Posts
    8,097
    Good choice. Their psu's are made by Seasonic or CWT, have tested very well, and IIRC, have a good guarantee.

  8. #8
    Join Date
    Mar 2000
    Posts
    27,266
    Quote Originally Posted by FuzzyBunnyFeet
    ... Corsair CMPSU-750TX ...
    That one would be manufactured by CWT.
    "I know nothing."
    Cheers.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •