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Silverstone Power Supply Unstable?

post #1 of 14
Thread Starter 
I have the suspicion that my power supply is faulty. First of all, I had some video card problems where the card would not output video. Card fan would blast full speed, but no video what so ever. I never had suspicions about the power supply as it ran just fine without the video card. I RMAed it and got another 7970 back. So this one, booted up just fine, but when I tried to run Windows Experience Index, the computer rebooted and there was a message that told me there was a power surge. One day later and I shut down the computer and turn it back on again, but the video card would not display. I had bought a dual molex to 8 pin earlier, and I just assumed the adapter wasn't putting out enough juice (only one 8 pin on the power supply)...

Two days pass, and I bought a Silverstone extension which I can connect directly to the power supply. Just hooked it up and had a go, but i was greeted with the windows splash screen, followed by a black screen. I disconnected my fan controller, and also pressed the card down on the slot. Booted just fine. I started to suspect the power supply....

Tried to Run the Windows Index again, to see if I would crash again. And it did mad.gif The same message appeared about a power surge caused shutdown.

The power supply is a SILVERSTONE ST55F-G 550W. It has a low power hum which I assume is normal.

Then again my video card might be faulty but I am pretty sure its the power supply. When I ran the Windows Experience Index the fan sped up quite a bit. I would say around 70%. I am not sure if this is normal since it has been a while since I have run this Index.

Please help. The power supply isn't urgent as I can run just fine on integrated. Also any suggestions if i do need a new power supply. I just need a reliable power supply with at least 550w. Price has to be low, but I can give a premium if I have to.
post #2 of 14
could you pls give us a full list of your involved hardware?
did you overclock the cpu / gpu.. and so on.. thank you
post #3 of 14
Thread Starter 
Quote:
Originally Posted by smex View Post

could you pls give us a full list of your involved hardware?
did you overclock the cpu / gpu.. and so on.. thank you

Not that much.
3570k Stock
H100 (Running two fans currently) Crashed with 4 on it. Low speed of 900rpm
BItfenix Recon
Asus Z77 ITX
Mushkin 2133 8GB
Samsung SDD 256gb. Thats about it. Mouse and keyboard too.
post #4 of 14
did you connect some extra power supply to the board besides the normal connector?
hmm you have around 440-450 real watt with this psu.. i´m not sure if this is enough,
especially with some overclocking.

so i doubt its faulty.. i think its too low power.


do your gpu have 2 x 6 connectors or 1x8 +1x6 ?
post #5 of 14
Thread Starter 
Nope. I just have the regular connectors. Power supply comes with one 8 pin and one 6 pin. It is actually rated for 550w continuous power and 600 peak so there should be no problem. The video card we are talking about is a 7970 Direct CU ii. If it has no load on it, it run fine, but it crashes under load (Windows Index). Also no overclocking whatsoever. What surprised me is after the black screen incident, as it took of the fan controller, it booted up fine.
post #6 of 14
Quote:
Originally Posted by mistermenphis22 View Post

Nope. I just have the regular connectors. Power supply comes with one 8 pin and one 6 pin. It is actually rated for 550w continuous power and 600 peak so there should be no problem. The video card we are talking about is a 7970 Direct CU ii. If it has no load on it, it run fine, but it crashes under load (Windows Index). Also no overclocking whatsoever. What surprised me is after the black screen incident, as it took of the fan controller, it booted up fine.


hmm.. its possible that one faulty component messes things up.. but it is more likely there is not
enough juice from what you were talking.

also.. did you connect the gpu with ONE cable and two power connectors on it or two seperate cables.
this used to make me some headache when i was establishing sli until i used four cables on the two gpu´s
post #7 of 14
Thread Starter 
Quote:
Originally Posted by smex View Post

hmm.. its possible that one faulty component messes things up.. but it is more likely there is not
enough juice from what you were talking.

also.. did you connect the gpu with ONE cable and two power connectors on it or two seperate cables.
this used to make me some headache when i was establishing sli until i used four cables on the two gpu´s

Dual cables. Used the original cable (has 6 pin and 8 pin from a single cable) and a new cable I bought which is hooked up directly into the power supply. It a Silverstone Sleeved cable that is supported by the power supply.

Also, I don't think anything is faulty as everything runs just fine redface.gif
post #8 of 14
you could also try downclocking the card and voltage and see what happens
(evga precisision x, msi afterburner )
post #9 of 14
Thread Starter 
Quote:
Originally Posted by smex View Post

you could also try downclocking the card and voltage and see what happens
(evga precisision x, msi afterburner )

Appreciate the help thumb.gif

I might invest in a new power supply if I have to... But like I said, there is a power problem since at every crash, there is a message that says power supply surge detected. I am at a loss of what to do.
post #10 of 14
I hope it doesn't come to this, but if you do end up needing to replace your PSU then I'd recommend the Rosewill CAPSTONE 550w ($80 @ Newegg).
Julia
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Julia
(11 items)
 
Centurion (Dead)
(11 items)
 
 
CPUMotherboardGraphicsRAM
AMD Athlon 64 3700+ EPoX EP-9NPA+ Ultra EVGA GeForce 6800 GS (256-P2-N389-AX) CORSAIR VS1GB400C3 
Hard DriveOptical DriveOSMonitor
Western Digital Caviar SE WD1600JS NEC ND-3520A Windows XP Dell M780 
PowerCaseOther
FSP Group SAGA+ 450R Cooler Master Centurion 5 w/ Window (CAC-T05-WW) Samsung Floppy Drive (SFD321B/LBL1) 
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