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R9 290 is causing reboots in Unigine benchmarks (How do I determine if it's the PSU or the card)

post #1 of 9
Thread Starter 
Just bought a "slightly used" xfx 290. When I run Heaven or Valley, the psu turns off for a moment then restarts the computer. I have a Xigmatek 650 watt. It has four 12V rails at 18a. I tried different rails but same issue. I reset my cpu to stock and had the same issue.

Basically, it's one of three things (I guess it could be that the PCIE slot isn't delivering power, but I doubt it).

1) PSU is no good.

2) Card is no good.

3) Something wrong at the outlet.

I think though that if it were the outlet, it would have tripped the breaker. I took it off the power strip too, but that didn't have any affect. I'm considering taking it to microcenter tomorrow and seeing if they'll let me plug it into something and/or buying a psu. I'd prefer not to have to bring the card to MC though because I don't want them to charge me to test the card and I don't want to carry it around.

Ideas?
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post #2 of 9
PSU! Not that your PSU is bad, but probably not putting out enough power. I had a 700watt on 2x7950's and would crash the same way when i tried to overclock my cards. CPU already had an overclock on it. Stepped up to an 850 and no more reboots. Also, if your PSU is modular you could try plugging your pcie power cables into another socket and maybe isolate it from other power hungry things on that rail if you have more than one. Probably need a bigger PSU though. 290x is power hungry.
post #3 of 9
Thread Starter 
How can you tell it's the psu? I would have thought that 650 is enough. I have each connector on a separate 12v 18 amp rail.

Also this is happening at stock.
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post #4 of 9
Are you gettjng a blak screen when it crahes? Does the fan spin up?
    
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post #5 of 9
Thread Starter 
The psu shuts down . No screen. It's like I pulled the power cable.
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My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Core I7 920 ASUS P6T Deluxe v2 Radeon 5850 3x2GB Corsair XMS3 1600 
Hard DriveOSMonitorKeyboard
2x320 Seagate WIN7 x64 Samsung 24" Logitech 
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post #6 of 9
Yea.. Your PSU is tripping because it has too much load on it. What kind of cpu you have? Recommended psu is 750 watts.
post #7 of 9
A stock-clocked 290X is only drawing 250W or so. I highly doubt he's overdrawing the PSU unless it is a crappy model incapable of putting out anything near the rated power, which is possible. My system routinely draws 400-450W at the wall with an overclocked 4770K and overclocked 290X. Even allowing for the higher power draw of a i7 920, he's not drawing 650W.

It's either a bad PSU, a problem with one of the rails, or something wrong with the card.
post #8 of 9
Well then it's a bad psu or problem with the rail. I had the exact problem even on my 850 watt psu when I had my pcie power cables on the wrong rail and overloaded it. As soon as the cards loaded up, boom. Computer reboots. He just said that he has it on an 18 amp rail. Doesn't sound too beefy to me.
post #9 of 9
Thread Starter 
It was the PSU and potentially the rails, but I got a new psu. I did experience one of those black screen crashes that I've seen people talk about. Now the question is whether to keep the card. I bought it used and it was advertised as being unlockable, but it is not.
My System
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CPUMotherboardGraphicsRAM
Core I7 920 ASUS P6T Deluxe v2 Radeon 5850 3x2GB Corsair XMS3 1600 
Hard DriveOSMonitorKeyboard
2x320 Seagate WIN7 x64 Samsung 24" Logitech 
PowerCaseMouseMouse Pad
Xigmatek 650W Moddular CM 690 MS cordless Desk 
  hide details  
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My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Core I7 920 ASUS P6T Deluxe v2 Radeon 5850 3x2GB Corsair XMS3 1600 
Hard DriveOSMonitorKeyboard
2x320 Seagate WIN7 x64 Samsung 24" Logitech 
PowerCaseMouseMouse Pad
Xigmatek 650W Moddular CM 690 MS cordless Desk 
  hide details  
Reply
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