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Old 05-27-08, 02:20 PM   #1
revmra
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Default PSU, mobo, and FX5700 Ultra

I have a BFG GeForce FX 5700 Ultra that I use with an Athlon XP 1800+ in an Iwill XP333 motherboard hooked up to an Orion 400W PSU. At the beginning of the month, the fan on the video card died after working well for me for over four years. I RMA'd it with BFG and they sent me out another one (I got it back within 48 hours!). Unfortunately while playing Neverwinter Nights, the screen would lock up and I'd get red bands across the picture. Normally if I hit the reset button or used ctrl-alt-backspace to kill X (I'm using Linux), everything would go back to normal. The last time this happened, however, I rebooted and got a grid of white blocks all over the screen.

When I called BFG again, the guy asked me to check my voltage readings in the BIOS. The 12V rail was reading 12.47 which he was concerned about. I know that that's toward the top end of the range you would like to see, but it's within a 5% tolerance. Could that really be the problem? Could that kill the card, especially at boot when the drives and such would be spinning up? I know Orion PSUs aren't the greatest, but I also don't want to invest more in this box than I have to. I hope to upgrade later in the year and let my kids use this box. Also, while I've had the 5700 Ultra for four years, the PSU is relatively new--I bought it in December, replacing the original Enermax (I believe) whose fan died.

Also, how many amps does this card require? I can't seem to find that info online. The PSU has two 12V rails, one with 14A and another with 15A.
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Old 05-27-08, 04:45 PM   #2
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Default Re: PSU, mobo, and FX5700 Ultra

12.47 doesn't seem that high to me. I don't really know the tolerances of different pieces of hardware, but I wouldn't think that a brand new video card would die immediately because of 12.47v on the 12v rail.

It is possible that the PSU is damaging your cards, but its not real likely. The 5700 doesn't have an external power connector does it? Its just powered straight from the AGP slot. I think you'd probably have other failures before it took out your graphics card. It seems more likely that you just got another bad card. It happens all the time.

And your 400W unit should be more than enough for that system. I ran an Athlon 64, 2 optical drives, 2 hard drives and a 7950GX2 off of a 420W Antec power supply for 2 weeks while waiting for a replacement power supply to arrive. That unit only had a single 12v rail with 20a. You should have no problems unless the PSU is actually defective.
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Old 05-27-08, 05:48 PM   #3
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Default Re: PSU, mobo, and FX5700 Ultra

Quote:
Originally Posted by CaptNKILL
It is possible that the PSU is damaging your cards, but its not real likely. The 5700 doesn't have an external power connector does it? Its just powered straight from the AGP slot. I think you'd probably have other failures before it took out your graphics card. It seems more likely that you just got another bad card. It happens all the time.
Yeah, my 5700 Ultra has an port for a molex connector.

I know the guy who owns the place where I got my PSU. He gave me a screaming deal on an Ultra Xfinity ULT-XF500. It's overkill for my box, I know, but this PSU got pretty decent reviews and it supplies 16A and 18A over its 12V rails. That should do it. I ran tests with a PSU tester and the 12V rails were indeed slightly high, although not quite as high as the BIOS was reporting. Odd thing is that the 5v and 3.3v rails were actually beyond the 5% tolerance. This new one clocks in at 12.2. At least they can't tell me that's the problem. One thing's for sure, this PSU is WAY heftier than the Orion.

I am leaning towards your take on things, though. I think it was just a bum card. I've been borrowing a 6200 for a while and it's been solid. If BFG works as quickly as they did last time, I'll have a "new" (read: different) card on Thursday, so I'll find out for sure then.
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Old 05-27-08, 07:34 PM   #4
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Default Re: PSU, mobo, and FX5700 Ultra

Quote:
Originally Posted by revmra
Yeah, my 5700 Ultra has an port for a molex connector.

I know the guy who owns the place where I got my PSU. He gave me a screaming deal on an Ultra Xfinity ULT-XF500. It's overkill for my box, I know, but this PSU got pretty decent reviews and it supplies 16A and 18A over its 12V rails. That should do it. I ran tests with a PSU tester and the 12V rails were indeed slightly high, although not quite as high as the BIOS was reporting. Odd thing is that the 5v and 3.3v rails were actually beyond the 5% tolerance. This new one clocks in at 12.2. At least they can't tell me that's the problem. One thing's for sure, this PSU is WAY heftier than the Orion.

I am leaning towards your take on things, though. I think it was just a bum card. I've been borrowing a 6200 for a while and it's been solid. If BFG works as quickly as they did last time, I'll have a "new" (read: different) card on Thursday, so I'll find out for sure then.
That new PSU will definitely be better than your old one. Hopefully with a new PSU and another video card you'll have everything covered.
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Old 06-09-08, 10:32 AM   #5
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Default Re: PSU, mobo, and FX5700 Ultra

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