PSU Question

By rfcoop ยท 12 replies
Dec 17, 2006
  1. I think I need a new PSU.
    How much amperage do I need on the 12v. rail?

    A7N8X Deluxe
    Corsair DDR400 1gig
    GForce MX4000 AGP
    2 Maxtor 200 gig
    Writer and DVD Burner

    And is there any easy way to test my PSU's 12v rail? I have a Rosewill 502 and I think it's blown?
    Thanks, rfcoop
  2. DonNagual

    DonNagual TechSpot Ambassador Posts: 2,406

    Your system isn't too demanding. I'd say if you are in the 18amp range you are in good shape.

    If you want to test to see if your PSU is putting out stable voltage, download and run THIS and check your +3.3v, +5v and +12v readings. They shouldn't be more than 5% off.

    Rosewill psus don't have a great reputation. Even if it is still working for you, it may be a good idea to spend $40 or $50 and get yourself a 450w FSB powersupply.
  3. Mictlantecuhtli

    Mictlantecuhtli TS Evangelist Posts: 4,345   +11

    Why do you think that?
  4. chuck4456

    chuck4456 TS Rookie Posts: 37


    It's best to test your rail voltage with a good, accurate DIMM. ROSEWILLs die quick. I just got rid of one that was a temporary solution. I wanted it to last for about 3 months until I got another PCP&C. It lasted 2. Almost took out a 2500. system. You never know who's building for RW, so you take a very calculated risk. FSPs are good, so are SeaSonic. For your setup, a SeaSonic S12 500 watt should do the trick.
  5. rfcoop

    rfcoop TS Rookie Topic Starter

    Why? check my post of 12/13 "Board post and CPU Troubles". Thanks, I'll check out the SeaSonic. This Rosewill has been running non stop for a year, I guess I got the best out of it. I have a new cpu coming but I think it's the PSU. I'm starting to find out there's a lot of junk out there. rfcoop
  6. chuck4456

    chuck4456 TS Rookie Posts: 37

    I had good luck with Rosewills long ago. They always seemed to do fine in web-surfer builds. They fall apart with more demanding systems. Somebody in Quality Control must have died. SeaSonic, SilverStone, PC Power & Cooling and Etasis are some of the best out there.
  7. TimeParadoX

    TimeParadoX TS Rookie Posts: 2,273

    Who actually builds a system for Web-surfing? :haha:

    If I was going to have a computer for ONLY using Google then i'll buy a crap one from Radioshack :D
  8. chuck4456

    chuck4456 TS Rookie Posts: 37

    I put together a few for friends and neighbors for school stuff, etc. I call them web-surfers. Basic components, mid-range grapphix, and that kind of stuff. Nuttin' fancy.
  9. TimeParadoX

    TimeParadoX TS Rookie Posts: 2,273

    Oh :D

    Well still I think all my builds are for gaming only, I dont think I would waste time on crap machines :)
  10. chuck4456

    chuck4456 TS Rookie Posts: 37

    People around here are working folks that need decent PCs. The ones that have money are realcheapskates. I prefer performance builds myself. Gotta do what ya gotta do. I quit building for the public anyway. Always just broke even. Maintenance and service now - maybe a high end rig now and then. I agree with you. They can buy a DELL cheaper than I can build them one these days.
  11. rfcoop

    rfcoop TS Rookie Topic Starter

    Well, I got a new AX450-PN FSP PSU from Newegg and just put everything together. Good guess but no cigar. Still no post or beeps. Meanwhile I also bought a CPU off ebay and swapped it out. Did the trick. I'm glad I got the new supply after all the great things that you guys are saying about Rosewill's. And I learned something - Dead CPUs don't necessarily post beep codes. (I read that they did in another post) I'm still curious though how I fried the it as I wasn't pushing very hard and the temps were cool. Maybe the Rosewill fired some wierd voltage spike when I hooked up the new cooler. Anyway thanks for all the help, and by the way the FSP is WAY quieter than the Rosewill. I can actually talk on the phone in here while this thing is running.
  12. Mictlantecuhtli

    Mictlantecuhtli TS Evangelist Posts: 4,345   +11

    I'm running this system with a 300W PSU (this one) and not even using all power:

    - AMD Opteron 165 @ 2.7 GHz
    - 3 GB DDR400 RAM
    - GeForce 7600GS 512MB
    - 2 x 250GB + 160 GB hdds
    - Gigabyte i-Ram 3 GB
    - Soundcard
    - TV-card
    - Two 12cm fans (one for the CPU, one for GPU)

    The PSU label says 18A for +12V.
  13. halo71

    halo71 TS Rookie Posts: 1,090

    Thats crazy! People that build computers for a living, i would think sell way more of the "crap machines" to surf the internet with than they do gaming rigs. Crap machines=crap money?? I dont think so....
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