X1900XT (openbox) help with eehhh

I have a o.b 1900xt and I'm getting very low frame rates when i installed Catalyst 7.10.
but when installed 7.8 the framerates increased. i was wondering, having not enough power
from the psu could cause poor frame rates? my psu 350 watt

edit------------- i got it today, hoping to resolve my problem b4 my 15-days./
8 answers Last reply
More about x1900xt openbox eehhh
  1. Sounds like you need a new PSU then...

    Try these low cost 400w+ PSUs:

    http://www.anandtech.com/casecoolingpsus/showdoc.aspx?i=3146

    The Corsair comes out on top, but any of them should be enough to power a x1900xt.
  2. i suggest getting a psu over 450 watts.. like corsair or ocz
  3. Hi there,

    Go there and make your own calculation:

    http://www.extreme.outervision.com/psucalculatorlite.jsp

    That will give you a good idea the power required for your puter.

    Enjoy !
  4. Thanks, I'm buying a http://www.newegg.com/Product/Product.aspx?Item=N82E16817708001 ... but what about the +12V Rails, is 2 +12V Rails better than 1?? i dont really know about psu's
  5. For the x1900xt they recommend at least 30A on the 12V rail.

    System Requirements:
    PCI Express based PC is required with one x16 lane graphics slot available on the motherboard.
    Connection to the system power supply is required: 450-Watt power supply or greater, 30 Amps on 12 volt rail recommended (assumes fully loaded system)
    PCI Express compliant power supply required. Connect directly to the power supply with a 6 pin PCI Express power connector For CrossFire: 550 watt power supply or greater, 38 Amps on 12 volt rail
    Installation software requires CD-ROM drive
    DVD playback requires DVD drive and decoder software (not included)

    http://www.sapphiretech.com/en/forums/showthread.php?t=5383

    rhe power supply that you have chosen is only 18A on the 12V rail. That Jpac is really not recommended (tier 5) get A power supply with at least 30A on the 12V rail, Tier 2 or 3 from this list.

    http://www.xtremesystems.org/forums/showthread.php?t=108088
  6. thanks bob =], now should i uninstall the card right now? like is it going to mess the card up by not having enough watts. till i get the new psu this week that is
  7. Id uninstall it, cause at boot it draws alot. It could bring your whole system down. I have a 29 amp (both 12v rails/combined) with a 1900xt. It runs fine. 2gigs ram, a dvd read write and 1 HDD. Its a enermax. 350 just wont cut it
  8. I run a Corsair HX620 with an X1950 Pro card with the same power requirements as yours. The HX620 is 50a across three 12v rails. That's more than I need but I'll be using it with my next build as well. Their 5 year warranty is unbeatable and I'm sure they'll still be around in 5 years. They're expensive, but you definitely get what you pay for in a PSU. You might consider one of the smaller models if you don't plan on ever using it for more than one video card.

    These are good deals:
    http://www.directron.com/cmpsu520hx.html
    http://www.newegg.com/Product/Product.aspx?Item=N82E16817139003
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