PS for HD3850

[Traveler]

I installed a Sapphire HD3850 512mb AGP card today. After a minute or so, the PS burned out in front of me.

So, what would be the ideal PS (watt?) for this card?

I have a P5P800-VM motherboard with Pentium D 920 and 2GB RAM, 1 HD, 1 CD-RW, 1 DVD-RW, 1 PCI sound card, 1 PCI PATA adapter, and 1 PCI firewire card, plus this HD3850 AGP card.



Moved to PSU forum.

BFG10K.

 

[theAnimal]

Antec Earthwatts 380/430 or Corsair CX400.

 

[cubeless]

Antec Earthwatts 380/430 or Corsair CX400.

ahhh, i love the smell of burning pcb in the morning...

what was the previous psu? i'd be curious if it was just the psu dying of natural causes or getting cooked...

 

[VirtualLarry]

I'd like to know the previous PSU as well. We love burnt PCB stories!

 

[dualsmp]

I have a Sapphire Radeon 3850 AGP and run a Corsair 450VX. System is P4 2.6@3.15GHz HT with 2GB DDR, 1TB Green Drive, 1 DVDR. The most I've ever drawn from the wall was 300 watts (AC) with OCCT, which is about 250 watts (DC). You would be fine with a Corsair CX 400 or Antec 380 Earthwatts as previously mentioned. Sapphire actually recommends a 450watt PSU, however it's probably a bit overkill. Any quality 350w PSU should handle the 3850, just stick with good PSU brands (Antec, Corsair, BFG, Enermax), not brands like Apevia.

 

[Traveler]

I put in a new 500W PS.
I connected two rails (each 21Amps) to the power adapter of the card.
But, I can't seem to get into windows. I can only get into safe mood.
Every time it tries to get into safe mood w/ networking or normal mood, it just reboots itself when gets into the window logo (scene just after log on).
Does anyone know why?

 

[dualsmp]

What kind of supply is the 500w? It's possible your PSU that burned up could have damaged components on your motherboard or damaged your video card itself. Unfortunately it can happen when a PSU lets go.

Possibly your hard drive got corrupted? Maybe a reinstall might help?

 

[cusideabelincoln]

What OS are you using?

I'd say you probably just need to run Chkdsk on the hard drive. Some files probably got corrupted when your (I assuming) computer shut down when the PSU failed.

 

[Traveler]

Vista.
I plugged in my old Radeon 9600 card. The same thing happens: keeps rebooting or freezing itself whenever almost reaching windows.
Now I think it may be the windows files corrupted.


For the 4-pin Molex to 8-pin PCI adaptor, does the two 4-pin molex have to be connect to two virtually separated power connector, or extension also possible?
My PSU has three 12V 4-pin connectors, two are virtually separated from the PSU, the third is an extension from one of the 4-pin connector.

 

[TurtleCrusher]

Jesus...

What power supply is it?

 

[Traveler]

non-brand name PSU.
Burned one was a 600W.
Replacing one is a 500W.

Both of them have been working with me for years.

 

[dualsmp]

It doesn't matter if both your PSU's worked for years. Your generic 600w burned up in minutes as soon as you had a video card that actually draws some decent wattage. Your generic 500w probably isn't much better (especially an old generic power supply). Many generics can't supply even 50% of the power they supposedly claim. Heed the advice.... Buy a decent name brand power supply, or if you want to struggle away with random reboots with your generic then have fun.

 

[Traveler]

It's not really the problem now.
The problem is can't even get into windows with any video card.

 

[Arkaign]

Do safe mode with networking and grab a small linux live cd, perhaps Ubuntu. See if that boots to the desktop normally. If so, your windows install is almost certainly borked, but its not a hardware issue.

 

[plonk420]

i don't skimp on PSUs anymore (at least on systems that matter)... i get PC Power and Cooling Silencers...

it all started with my 4870 which blew up an Antec 550 (that they themselves said was crappy). after feeling how cool it ran a friend's SLI 8800GTSes on a 130 watt CPU, i was sold and got a Silencer 750. i now have it powering a 5870.

 

[Traveler]

I thought Antec is a good PSU.

Here are what I found out:
HD3850: successfully booted in safe mode few times, but not anymore, keeps rebooting
Radeon 9600: enter windows, but all the sudden reboots itself after a while
Rage 128 Pro: enter windows w/o problem, but video quality too low for vista

I'm still not sure what gives the rebooting... something wrong w/ the motherboard?