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Is it the PSU?

post #1 of 23
Thread Starter 
I'm running a 965BE OC to 4.1, with crossfire xfx 5850's non reference and a 750w xfx pro 80plus bronze psu... Occasionally I get random system crashes, sometimes while playing games and other times while browsing the Internet. The screen flickers and system restarts.. I've run prime 95 for 12 hours already so I think the CPU is stable with high temps of 55c. I was starting to suspect the psu since all the other hardware checked out on tests... What can I do to check my psu or is the one I have not good enough for what I'm running?
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post #2 of 23
i highly doubt its psu 750w is more than enough
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post #3 of 23
I would look at the crossfire setup and or the overclock to cause the flickers and restarts. Unless you are getting intermittent voltage spikes on psu which is not unlikely as when psu's fail they usually just fail. but just my opinion
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post #4 of 23
The PSU has enough wattage, but there could be a problem with it..

I would check your motherboard standoffs make sure they are secure and all the screws are there.

You can also try driver sweeping and reinstalling GPU drivers in case it is related to those.

Are you missing any power cables? CPU 8 pin? GPU 6 pins?

Lots of things can be causing this, need to just go down the list and eliminate things 1 by 1.
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post #5 of 23
Hey sneaky, I am running a stock 1090t and a single 5850 oc'ed to 900/1000 and my total power draw on gaming load is around 260 watts from the wall. No way is the psi underpowered. If it is anything to do with the psu then there is something terribly wrong with it. Have you tried furmark as well?
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post #6 of 23
Quote:
Originally Posted by Shneakypete View Post
I'm running a 965BE OC to 4.1, with crossfire xfx 5850's non reference and a 750w xfx pro 80plus bronze psu... Occasionally I get random system crashes, sometimes while playing games and other times while browsing the Internet. The screen flickers and system restarts.. I've run prime 95 for 12 hours already so I think the CPU is stable with high temps of 55c. I was starting to suspect the psu since all the other hardware checked out on tests... What can I do to check my psu or is the one I have not good enough for what I'm running?
The description of "ATX 750w" makes me worried. Which 750W power supply do you have exactly? What's the brand and model?
It's a computer!
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i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
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It's a computer!
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CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
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post #7 of 23
Thread Starter 
Quote:
Originally Posted by BlahBlahBlah View Post
The PSU has enough wattage, but there could be a problem with it..

I would check your motherboard standoffs make sure they are secure and all the screws are there.

You can also try driver sweeping and reinstalling GPU drivers in case it is related to those.

Are you missing any power cables? CPU 8 pin? GPU 6 pins?

Lots of things can be causing this, need to just go down the list and eliminate things 1 by 1.
Each gpu has 2, 6pins... Mobo has 4 pin... Already ran driver sweeper

Quote:
Originally Posted by TwoCables View Post
The description of "ATX 750w" makes me worried. Which 750W power supply do you have exactly? What's the brand and model?
Xfx 750w pro 80plus bronze
Money Pit
(14 items)
 
  
CPUMotherboardGraphicsRAM
965BE Asus m4a78t-e HD 7970 G skill 1600 
Hard DriveCoolingOSMonitor
WD caviar black 500gb H100 7 64 Eyefinity w/ 3 28" iInc 
PowerCase
ATX 750w Cm 960 II advanced 
  hide details  
Reply
Money Pit
(14 items)
 
  
CPUMotherboardGraphicsRAM
965BE Asus m4a78t-e HD 7970 G skill 1600 
Hard DriveCoolingOSMonitor
WD caviar black 500gb H100 7 64 Eyefinity w/ 3 28" iInc 
PowerCase
ATX 750w Cm 960 II advanced 
  hide details  
Reply
post #8 of 23
Thread Starter 
O, and all stand offs are screwed down I double checked it
Money Pit
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Hard DriveCoolingOSMonitor
WD caviar black 500gb H100 7 64 Eyefinity w/ 3 28" iInc 
PowerCase
ATX 750w Cm 960 II advanced 
  hide details  
Reply
Money Pit
(14 items)
 
  
CPUMotherboardGraphicsRAM
965BE Asus m4a78t-e HD 7970 G skill 1600 
Hard DriveCoolingOSMonitor
WD caviar black 500gb H100 7 64 Eyefinity w/ 3 28" iInc 
PowerCase
ATX 750w Cm 960 II advanced 
  hide details  
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post #9 of 23
Thread Starter 
Quote:
Originally Posted by KRAZYTRUCKER View Post
I would look at the crossfire setup and or the overclock to cause the flickers and restarts. Unless you are getting intermittent voltage spikes on psu which is not unlikely as when psu's fail they usually just fail. but just my opinion
How can I test for voltage spikes? Running furmark and such doesn't cause crashes... Just random
Money Pit
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CPUMotherboardGraphicsRAM
965BE Asus m4a78t-e HD 7970 G skill 1600 
Hard DriveCoolingOSMonitor
WD caviar black 500gb H100 7 64 Eyefinity w/ 3 28" iInc 
PowerCase
ATX 750w Cm 960 II advanced 
  hide details  
Reply
Money Pit
(14 items)
 
  
CPUMotherboardGraphicsRAM
965BE Asus m4a78t-e HD 7970 G skill 1600 
Hard DriveCoolingOSMonitor
WD caviar black 500gb H100 7 64 Eyefinity w/ 3 28" iInc 
PowerCase
ATX 750w Cm 960 II advanced 
  hide details  
Reply
post #10 of 23
Maybe you're limited by the 4-pin CPU connector.
It's a computer!
(19 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
Mouse PadAudioAudio
Basic, but premium round X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
  hide details  
Reply
It's a computer!
(19 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
Mouse PadAudioAudio
Basic, but premium round X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
  hide details  
Reply
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