Overclock.net › Forums › Components › Power Supplies › Could my psu be the reason behind this problem?
New Posts  All Forums:Forum Nav:

Could my psu be the reason behind this problem?

post #1 of 7
Thread Starter 
Hi everyone,

I have built my friend a small mining rig.
It uses a sempron cpu, an asrock 970 r2.0 mobo, single stick of 4gb ram and two hd7950 gfx cards.

It is being powered by an EVGA 750W psu.

So the system runs fine for regular stuff with 2 cards. When we start mining it instantly turns off. BAM

Mining with 1 card in there is fine. Either card. Also either slot. No problems whatsoever
But when using two gpus it is an instant shutdown.

750W should be plenty to run two hd7950s at 100%.

Could this be a problem with the PSU? That it cannot handle the power draw and needs to be RMA'd?

Hope you people can shed a light on this for me.
 
OrB!T*
(18 items)
 
 
CPUMotherboardGraphicsGraphics
Intel i7 3770k Gigabyte Z77X-UP7 Kfa2 gtx670 EVGA GTX670 
RAMHard DriveCoolingOS
Samsung 16gb low voltage ram Samsung 830 64gb ssd x2 Custom XSPC water loop Windows 7 
KeyboardPowerCaseMouse
Logitech g19 Cooler master silent pro hybrid 1050 Silverstone TJ07 Logitech X9 
AudioOther
Logitech G35 Full Coldzero plexi panels 
CPUMotherboardGraphicsRAM
Intel i7-4770k Intel DZ87KLT75K Integrated Cosair Vengeance 2*4 1.5v CL8 1600 
Hard DriveHard DriveHard DriveOptical Drive
Plextor 256GB SSD WD Caviar black 1TB Samsung Spinpoint 1TB LG bluray rewriter 
CoolingOSMonitorKeyboard
Intel AIO 120mm watercooler Windows 7 64bit LG 2360V Thermaltake Forged Blue TT switch 
PowerCaseMouseMouse Pad
Cooler Master Silent Pro M600 Thermaltake Chaser MK I Roccat Kova+ Roccat Taito 
AudioAudio
Astrogaming A40 wireless Logitech Z-2300 
  hide details  
Reply
 
OrB!T*
(18 items)
 
 
CPUMotherboardGraphicsGraphics
Intel i7 3770k Gigabyte Z77X-UP7 Kfa2 gtx670 EVGA GTX670 
RAMHard DriveCoolingOS
Samsung 16gb low voltage ram Samsung 830 64gb ssd x2 Custom XSPC water loop Windows 7 
KeyboardPowerCaseMouse
Logitech g19 Cooler master silent pro hybrid 1050 Silverstone TJ07 Logitech X9 
AudioOther
Logitech G35 Full Coldzero plexi panels 
CPUMotherboardGraphicsRAM
Intel i7-4770k Intel DZ87KLT75K Integrated Cosair Vengeance 2*4 1.5v CL8 1600 
Hard DriveHard DriveHard DriveOptical Drive
Plextor 256GB SSD WD Caviar black 1TB Samsung Spinpoint 1TB LG bluray rewriter 
CoolingOSMonitorKeyboard
Intel AIO 120mm watercooler Windows 7 64bit LG 2360V Thermaltake Forged Blue TT switch 
PowerCaseMouseMouse Pad
Cooler Master Silent Pro M600 Thermaltake Chaser MK I Roccat Kova+ Roccat Taito 
AudioAudio
Astrogaming A40 wireless Logitech Z-2300 
  hide details  
Reply
post #2 of 7
Is it the 7500B or 750G you dont say

If its the 750G then you are probably cross loading it which is the worst thing you can do on a group regulated PSU
Seravee
(27 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core I7 6850K Gigabyte X99 Ultra Gaming EVGA GTX 1080 FTW2 Kingston HyperX DDR4 Savage 3000 MHz 
Hard DriveHard DriveHard DriveHard Drive
Samsung 840 Evo WD Green WD60EZRX  WD Red WD80EFZX 8TB  Seagate Ironwolf Pro 10 TB 
Optical DriveCoolingCoolingOS
LG CH12NS30 x5 Noctua NF-A14 FLX Noctua NH-D15S Windows 7 64 Bit 
MonitorMonitorKeyboardPower
Asus PG279Q LG 49UH750V 4K LED TV Corsair Gaming Strafe RGB EVGA SuperNova G2 750 watt 
CaseMouseMouse PadAudio
Phanteks Enthoo Luxe Roccat Kone EMP Roccat Sense Metor Sennheiser HD 598 
AudioAudioAudioAudio
Onkyo TX NR646  Dali Opticon Vokal x2 Dali Opticon 2 x2 Dali Opticon 1 
AudioOtherOther
Dali E12 F Subwoofer CableMod E series PSU cable set CableMod LED Strips 
  hide details  
Reply
Seravee
(27 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core I7 6850K Gigabyte X99 Ultra Gaming EVGA GTX 1080 FTW2 Kingston HyperX DDR4 Savage 3000 MHz 
Hard DriveHard DriveHard DriveHard Drive
Samsung 840 Evo WD Green WD60EZRX  WD Red WD80EFZX 8TB  Seagate Ironwolf Pro 10 TB 
Optical DriveCoolingCoolingOS
LG CH12NS30 x5 Noctua NF-A14 FLX Noctua NH-D15S Windows 7 64 Bit 
MonitorMonitorKeyboardPower
Asus PG279Q LG 49UH750V 4K LED TV Corsair Gaming Strafe RGB EVGA SuperNova G2 750 watt 
CaseMouseMouse PadAudio
Phanteks Enthoo Luxe Roccat Kone EMP Roccat Sense Metor Sennheiser HD 598 
AudioAudioAudioAudio
Onkyo TX NR646  Dali Opticon Vokal x2 Dali Opticon 2 x2 Dali Opticon 1 
AudioOtherOther
Dali E12 F Subwoofer CableMod E series PSU cable set CableMod LED Strips 
  hide details  
Reply
post #3 of 7
Thread Starter 
Might be the 750G.

If it is how should we connect the cables?

Edit: no it is the bronze version.
Edited by Hukkel - 1/12/14 at 6:26am
 
OrB!T*
(18 items)
 
 
CPUMotherboardGraphicsGraphics
Intel i7 3770k Gigabyte Z77X-UP7 Kfa2 gtx670 EVGA GTX670 
RAMHard DriveCoolingOS
Samsung 16gb low voltage ram Samsung 830 64gb ssd x2 Custom XSPC water loop Windows 7 
KeyboardPowerCaseMouse
Logitech g19 Cooler master silent pro hybrid 1050 Silverstone TJ07 Logitech X9 
AudioOther
Logitech G35 Full Coldzero plexi panels 
CPUMotherboardGraphicsRAM
Intel i7-4770k Intel DZ87KLT75K Integrated Cosair Vengeance 2*4 1.5v CL8 1600 
Hard DriveHard DriveHard DriveOptical Drive
Plextor 256GB SSD WD Caviar black 1TB Samsung Spinpoint 1TB LG bluray rewriter 
CoolingOSMonitorKeyboard
Intel AIO 120mm watercooler Windows 7 64bit LG 2360V Thermaltake Forged Blue TT switch 
PowerCaseMouseMouse Pad
Cooler Master Silent Pro M600 Thermaltake Chaser MK I Roccat Kova+ Roccat Taito 
AudioAudio
Astrogaming A40 wireless Logitech Z-2300 
  hide details  
Reply
 
OrB!T*
(18 items)
 
 
CPUMotherboardGraphicsGraphics
Intel i7 3770k Gigabyte Z77X-UP7 Kfa2 gtx670 EVGA GTX670 
RAMHard DriveCoolingOS
Samsung 16gb low voltage ram Samsung 830 64gb ssd x2 Custom XSPC water loop Windows 7 
KeyboardPowerCaseMouse
Logitech g19 Cooler master silent pro hybrid 1050 Silverstone TJ07 Logitech X9 
AudioOther
Logitech G35 Full Coldzero plexi panels 
CPUMotherboardGraphicsRAM
Intel i7-4770k Intel DZ87KLT75K Integrated Cosair Vengeance 2*4 1.5v CL8 1600 
Hard DriveHard DriveHard DriveOptical Drive
Plextor 256GB SSD WD Caviar black 1TB Samsung Spinpoint 1TB LG bluray rewriter 
CoolingOSMonitorKeyboard
Intel AIO 120mm watercooler Windows 7 64bit LG 2360V Thermaltake Forged Blue TT switch 
PowerCaseMouseMouse Pad
Cooler Master Silent Pro M600 Thermaltake Chaser MK I Roccat Kova+ Roccat Taito 
AudioAudio
Astrogaming A40 wireless Logitech Z-2300 
  hide details  
Reply
post #4 of 7
Quote:
Originally Posted by Hukkel View Post

Might be the 750G.

If it is how should we connect the cables?

Edit: no it is the bronze version.

Thats a downgraded FSP Raider

At best its mediocre
Seravee
(27 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core I7 6850K Gigabyte X99 Ultra Gaming EVGA GTX 1080 FTW2 Kingston HyperX DDR4 Savage 3000 MHz 
Hard DriveHard DriveHard DriveHard Drive
Samsung 840 Evo WD Green WD60EZRX  WD Red WD80EFZX 8TB  Seagate Ironwolf Pro 10 TB 
Optical DriveCoolingCoolingOS
LG CH12NS30 x5 Noctua NF-A14 FLX Noctua NH-D15S Windows 7 64 Bit 
MonitorMonitorKeyboardPower
Asus PG279Q LG 49UH750V 4K LED TV Corsair Gaming Strafe RGB EVGA SuperNova G2 750 watt 
CaseMouseMouse PadAudio
Phanteks Enthoo Luxe Roccat Kone EMP Roccat Sense Metor Sennheiser HD 598 
AudioAudioAudioAudio
Onkyo TX NR646  Dali Opticon Vokal x2 Dali Opticon 2 x2 Dali Opticon 1 
AudioOtherOther
Dali E12 F Subwoofer CableMod E series PSU cable set CableMod LED Strips 
  hide details  
Reply
Seravee
(27 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core I7 6850K Gigabyte X99 Ultra Gaming EVGA GTX 1080 FTW2 Kingston HyperX DDR4 Savage 3000 MHz 
Hard DriveHard DriveHard DriveHard Drive
Samsung 840 Evo WD Green WD60EZRX  WD Red WD80EFZX 8TB  Seagate Ironwolf Pro 10 TB 
Optical DriveCoolingCoolingOS
LG CH12NS30 x5 Noctua NF-A14 FLX Noctua NH-D15S Windows 7 64 Bit 
MonitorMonitorKeyboardPower
Asus PG279Q LG 49UH750V 4K LED TV Corsair Gaming Strafe RGB EVGA SuperNova G2 750 watt 
CaseMouseMouse PadAudio
Phanteks Enthoo Luxe Roccat Kone EMP Roccat Sense Metor Sennheiser HD 598 
AudioAudioAudioAudio
Onkyo TX NR646  Dali Opticon Vokal x2 Dali Opticon 2 x2 Dali Opticon 1 
AudioOtherOther
Dali E12 F Subwoofer CableMod E series PSU cable set CableMod LED Strips 
  hide details  
Reply
post #5 of 7
Thread Starter 
Should I put the 2nd gpu on another rail?
 
OrB!T*
(18 items)
 
 
CPUMotherboardGraphicsGraphics
Intel i7 3770k Gigabyte Z77X-UP7 Kfa2 gtx670 EVGA GTX670 
RAMHard DriveCoolingOS
Samsung 16gb low voltage ram Samsung 830 64gb ssd x2 Custom XSPC water loop Windows 7 
KeyboardPowerCaseMouse
Logitech g19 Cooler master silent pro hybrid 1050 Silverstone TJ07 Logitech X9 
AudioOther
Logitech G35 Full Coldzero plexi panels 
CPUMotherboardGraphicsRAM
Intel i7-4770k Intel DZ87KLT75K Integrated Cosair Vengeance 2*4 1.5v CL8 1600 
Hard DriveHard DriveHard DriveOptical Drive
Plextor 256GB SSD WD Caviar black 1TB Samsung Spinpoint 1TB LG bluray rewriter 
CoolingOSMonitorKeyboard
Intel AIO 120mm watercooler Windows 7 64bit LG 2360V Thermaltake Forged Blue TT switch 
PowerCaseMouseMouse Pad
Cooler Master Silent Pro M600 Thermaltake Chaser MK I Roccat Kova+ Roccat Taito 
AudioAudio
Astrogaming A40 wireless Logitech Z-2300 
  hide details  
Reply
 
OrB!T*
(18 items)
 
 
CPUMotherboardGraphicsGraphics
Intel i7 3770k Gigabyte Z77X-UP7 Kfa2 gtx670 EVGA GTX670 
RAMHard DriveCoolingOS
Samsung 16gb low voltage ram Samsung 830 64gb ssd x2 Custom XSPC water loop Windows 7 
KeyboardPowerCaseMouse
Logitech g19 Cooler master silent pro hybrid 1050 Silverstone TJ07 Logitech X9 
AudioOther
Logitech G35 Full Coldzero plexi panels 
CPUMotherboardGraphicsRAM
Intel i7-4770k Intel DZ87KLT75K Integrated Cosair Vengeance 2*4 1.5v CL8 1600 
Hard DriveHard DriveHard DriveOptical Drive
Plextor 256GB SSD WD Caviar black 1TB Samsung Spinpoint 1TB LG bluray rewriter 
CoolingOSMonitorKeyboard
Intel AIO 120mm watercooler Windows 7 64bit LG 2360V Thermaltake Forged Blue TT switch 
PowerCaseMouseMouse Pad
Cooler Master Silent Pro M600 Thermaltake Chaser MK I Roccat Kova+ Roccat Taito 
AudioAudio
Astrogaming A40 wireless Logitech Z-2300 
  hide details  
Reply
post #6 of 7
You can try but if it will help i dont know

Its just not a very good PSU

Wait 20 amps per 12v rail???
Seravee
(27 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core I7 6850K Gigabyte X99 Ultra Gaming EVGA GTX 1080 FTW2 Kingston HyperX DDR4 Savage 3000 MHz 
Hard DriveHard DriveHard DriveHard Drive
Samsung 840 Evo WD Green WD60EZRX  WD Red WD80EFZX 8TB  Seagate Ironwolf Pro 10 TB 
Optical DriveCoolingCoolingOS
LG CH12NS30 x5 Noctua NF-A14 FLX Noctua NH-D15S Windows 7 64 Bit 
MonitorMonitorKeyboardPower
Asus PG279Q LG 49UH750V 4K LED TV Corsair Gaming Strafe RGB EVGA SuperNova G2 750 watt 
CaseMouseMouse PadAudio
Phanteks Enthoo Luxe Roccat Kone EMP Roccat Sense Metor Sennheiser HD 598 
AudioAudioAudioAudio
Onkyo TX NR646  Dali Opticon Vokal x2 Dali Opticon 2 x2 Dali Opticon 1 
AudioOtherOther
Dali E12 F Subwoofer CableMod E series PSU cable set CableMod LED Strips 
  hide details  
Reply
Seravee
(27 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core I7 6850K Gigabyte X99 Ultra Gaming EVGA GTX 1080 FTW2 Kingston HyperX DDR4 Savage 3000 MHz 
Hard DriveHard DriveHard DriveHard Drive
Samsung 840 Evo WD Green WD60EZRX  WD Red WD80EFZX 8TB  Seagate Ironwolf Pro 10 TB 
Optical DriveCoolingCoolingOS
LG CH12NS30 x5 Noctua NF-A14 FLX Noctua NH-D15S Windows 7 64 Bit 
MonitorMonitorKeyboardPower
Asus PG279Q LG 49UH750V 4K LED TV Corsair Gaming Strafe RGB EVGA SuperNova G2 750 watt 
CaseMouseMouse PadAudio
Phanteks Enthoo Luxe Roccat Kone EMP Roccat Sense Metor Sennheiser HD 598 
AudioAudioAudioAudio
Onkyo TX NR646  Dali Opticon Vokal x2 Dali Opticon 2 x2 Dali Opticon 1 
AudioOtherOther
Dali E12 F Subwoofer CableMod E series PSU cable set CableMod LED Strips 
  hide details  
Reply
post #7 of 7
Thread Starter 
It worked. Was a rail thing. Only issues is I couldn't add a 3rd one apparently.
Never buying this PSU again.
 
OrB!T*
(18 items)
 
 
CPUMotherboardGraphicsGraphics
Intel i7 3770k Gigabyte Z77X-UP7 Kfa2 gtx670 EVGA GTX670 
RAMHard DriveCoolingOS
Samsung 16gb low voltage ram Samsung 830 64gb ssd x2 Custom XSPC water loop Windows 7 
KeyboardPowerCaseMouse
Logitech g19 Cooler master silent pro hybrid 1050 Silverstone TJ07 Logitech X9 
AudioOther
Logitech G35 Full Coldzero plexi panels 
CPUMotherboardGraphicsRAM
Intel i7-4770k Intel DZ87KLT75K Integrated Cosair Vengeance 2*4 1.5v CL8 1600 
Hard DriveHard DriveHard DriveOptical Drive
Plextor 256GB SSD WD Caviar black 1TB Samsung Spinpoint 1TB LG bluray rewriter 
CoolingOSMonitorKeyboard
Intel AIO 120mm watercooler Windows 7 64bit LG 2360V Thermaltake Forged Blue TT switch 
PowerCaseMouseMouse Pad
Cooler Master Silent Pro M600 Thermaltake Chaser MK I Roccat Kova+ Roccat Taito 
AudioAudio
Astrogaming A40 wireless Logitech Z-2300 
  hide details  
Reply
 
OrB!T*
(18 items)
 
 
CPUMotherboardGraphicsGraphics
Intel i7 3770k Gigabyte Z77X-UP7 Kfa2 gtx670 EVGA GTX670 
RAMHard DriveCoolingOS
Samsung 16gb low voltage ram Samsung 830 64gb ssd x2 Custom XSPC water loop Windows 7 
KeyboardPowerCaseMouse
Logitech g19 Cooler master silent pro hybrid 1050 Silverstone TJ07 Logitech X9 
AudioOther
Logitech G35 Full Coldzero plexi panels 
CPUMotherboardGraphicsRAM
Intel i7-4770k Intel DZ87KLT75K Integrated Cosair Vengeance 2*4 1.5v CL8 1600 
Hard DriveHard DriveHard DriveOptical Drive
Plextor 256GB SSD WD Caviar black 1TB Samsung Spinpoint 1TB LG bluray rewriter 
CoolingOSMonitorKeyboard
Intel AIO 120mm watercooler Windows 7 64bit LG 2360V Thermaltake Forged Blue TT switch 
PowerCaseMouseMouse Pad
Cooler Master Silent Pro M600 Thermaltake Chaser MK I Roccat Kova+ Roccat Taito 
AudioAudio
Astrogaming A40 wireless Logitech Z-2300 
  hide details  
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Power Supplies
Overclock.net › Forums › Components › Power Supplies › Could my psu be the reason behind this problem?