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Having to use 2x Antec SU-380's to power an AXP rig : /

May 30, 2007
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Okay, heres what I have.

PSU : Antec SU-380
+5v 25A
+3.3v 25A
+12v1 16A
+12v2 16A

Max +3.3v and +5v 130w
Max +12v 336w


Mobo : ASUS A7V880, KT880 based

CPU :
Athlon XP-M 2400+ 35w @ 2400mhz ( 200x12 ) 1.85v

Memory : 2x 512mb OCZ Gold VX PC3200 @ 266mhz 2.65v 2-3-3-7 2T dual channel

Video : 9800XT @ stock speeds

HDD : 120gb EIDE 8mb cache 7200 RPM

Optical : DVD +/- RW

Removeable : Floppy drive

Fans : 2x 80mm LED and 1x 90mm plain.

The Rosewill 550w PSU I borrowed from a friend worked fine with this system and the only real diff is his had 45A on the +5v, 30A on the +3.3v and 26A on the +12v.

Anyone have any clue why my system isn't running stable ? Does my AXP require higher +3.3 and +5v ? I searched the net and other people have been running similar system with similar PSU's so I'm a lil confoogled.

I tested each voltage for the PSU and they are all within 1 - 3% of the voltages like the +3.3v is at 3.25v and such.

Update :

It looks like the system runs perfectly stable when the CPU is @ 2500+ speeds ( 166x11 ) and 1.65v : /

Update :

System was not stable at merely using 2500+ speeds instead of the OC, but after some tinkering I upped the AGP voltage to 1.6v and now I can run 3000+ speeds ( 166x12 ) with 1.65v. Oddly enough I still can't run 3200+ speeds withotu lockups in game and I still got a VPU recovery error followed b a crash last night, something that never happened before.

I've tested both Antec Su-380 PSU's and get the same prob no matter which one I use so untill I get this figure out I'm using both :) One is running my HDD's and optical drives plus the extra power for the 9800 and the other is just running the mobo/cpu and floppy drive. This got the system running completely stable but I shouldn't have to pull the drives off the main PSU to get stability.

Anyone have a better reason for my instability with the new PSU other than a weaker +5v line or do I just need a PSU with a stronger +5v line ?

Update :

Looked arround the net and was finally able to find out that I need a heftier +5v line to run my CPU as my mobo doesn't have the +4 pin CPU power connection. So untill I get a PSU with a hefty +5v line I'm stuck using 2 power supplies to power my 1 PC : /