Overclock.net › Forums › Components › Power Supplies › EVGA SuperNOVA 750G 750w power supply having trouble running 3 R9 270s? [Mining question]
New Posts  All Forums:Forum Nav:

EVGA SuperNOVA 750G 750w power supply having trouble running 3 R9 270s? [Mining question]

post #1 of 9
Thread Starter 
Hey guys, I'm having a little bit of trouble by trying to run one of my rigs. So, basically I'm having a lot of hard time with trying to run all 4 of my R9 270s, 3 on the EVGA 750w and 1 on a CX430M power supply.

I have another pc that's running 2 gigabyte R9 270 and 2 MSI R9 270 on a CX430 and an EVGA 650W without any hiccups.

The computer runs a little bit longer if I don't hook up the powered risers to the power supply and then shuts down later on. Also, if I use Kalroth's CGminer, sometimes the computer would instantly shut down, but when I use the normal CGMiner, it runs for quite a while and then reboots.

Am I doing something wrong?


Here are my specs:

- 4x MSI R9 270

- Gigabyte GA-F2A88X-UP4

- AMD 6400k Black Edition

- Sandisk Extreme 32gb SSD

- Crucial Ballistix 4gb 1600mhz

- Corsair CX430M 430w

- Evga 750G 750W

- Windows 8.1
idk
(15 items)
 
 
CPUMotherboardGraphicsGraphics
i5 3570k p8z77-v pro sapphire hd 7950 sapphire hd 7950 
RAMHard DriveCoolingOS
samsung eco samsung f3 1tb corsair h100i windows 7 
MonitorKeyboardPowerCase
asus vh238h cooler master quickfire tk rosewill capstone 650 fractal design define r4 
MouseMouse PadAudio
corsair m60 steelseries qck+ rokkit 5 
CPUMotherboardGraphicsGraphics
i7 3570k ASRock Z77 WS sapphire hd 7950 flex sapphire hd 7950 flex 
GraphicsGraphicsRAMHard Drive
sapphire hd 7950 flex sapphire hd 7950 flex corsair vengeance 8gb 1866 samsung 840 120gb 
CoolingPowerCaseOther
h220 CORSAIR AX1200i nzxt switch 810 Individually Sleeved Modular Cable upgrade kit ... 
  hide details  
Reply
idk
(15 items)
 
 
CPUMotherboardGraphicsGraphics
i5 3570k p8z77-v pro sapphire hd 7950 sapphire hd 7950 
RAMHard DriveCoolingOS
samsung eco samsung f3 1tb corsair h100i windows 7 
MonitorKeyboardPowerCase
asus vh238h cooler master quickfire tk rosewill capstone 650 fractal design define r4 
MouseMouse PadAudio
corsair m60 steelseries qck+ rokkit 5 
CPUMotherboardGraphicsGraphics
i7 3570k ASRock Z77 WS sapphire hd 7950 flex sapphire hd 7950 flex 
GraphicsGraphicsRAMHard Drive
sapphire hd 7950 flex sapphire hd 7950 flex corsair vengeance 8gb 1866 samsung 840 120gb 
CoolingPowerCaseOther
h220 CORSAIR AX1200i nzxt switch 810 Individually Sleeved Modular Cable upgrade kit ... 
  hide details  
Reply
post #2 of 9
Could be that the power supply is just bad or going bad. Considering it's specs and certifications and what have you it is completely capable of delivering the FULL 750 watts needed (probably a bit more as well) so the fact that you're having your system randomly shut down tells me the power supply is either faulty or there's something else wrong such as the Corsair PSU being bad or some other major component (motherboard perhaps).

Have you tried swapping out each power supply separately to try and narrow down the problem?

Hope this helps!
post #3 of 9
EVGA NEX units are multi rails sounds like you are overloading one of the rails
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  Harman Kardon HKTS 60 Dali Opticon Vokal x2 Dali Opticon 2 
AudioOtherOther
x2 Dali Opticon 1 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  Harman Kardon HKTS 60 Dali Opticon Vokal x2 Dali Opticon 2 
AudioOtherOther
x2 Dali Opticon 1 CableMod E series PSU cable set CableMod LED Strips 
  hide details  
Reply
post #4 of 9
Thread Starter 
Quote:
Originally Posted by AndroidVageta View Post

Could be that the power supply is just bad or going bad. Considering it's specs and certifications and what have you it is completely capable of delivering the FULL 750 watts needed (probably a bit more as well) so the fact that you're having your system randomly shut down tells me the power supply is either faulty or there's something else wrong such as the Corsair PSU being bad or some other major component (motherboard perhaps).

Have you tried swapping out each power supply separately to try and narrow down the problem?

Hope this helps!

I just bought this one though to replace my old one that actually had the problem.
Quote:
Originally Posted by shilka View Post

EVGA NEX units are multi rails sounds like you are overloading one of the rails

What do you mean by that?

Also, my kill-a-watt meter is reading that the whole computer is only using 300w while the whole pc is under load, well the graphics cards.
idk
(15 items)
 
 
CPUMotherboardGraphicsGraphics
i5 3570k p8z77-v pro sapphire hd 7950 sapphire hd 7950 
RAMHard DriveCoolingOS
samsung eco samsung f3 1tb corsair h100i windows 7 
MonitorKeyboardPowerCase
asus vh238h cooler master quickfire tk rosewill capstone 650 fractal design define r4 
MouseMouse PadAudio
corsair m60 steelseries qck+ rokkit 5 
CPUMotherboardGraphicsGraphics
i7 3570k ASRock Z77 WS sapphire hd 7950 flex sapphire hd 7950 flex 
GraphicsGraphicsRAMHard Drive
sapphire hd 7950 flex sapphire hd 7950 flex corsair vengeance 8gb 1866 samsung 840 120gb 
CoolingPowerCaseOther
h220 CORSAIR AX1200i nzxt switch 810 Individually Sleeved Modular Cable upgrade kit ... 
  hide details  
Reply
idk
(15 items)
 
 
CPUMotherboardGraphicsGraphics
i5 3570k p8z77-v pro sapphire hd 7950 sapphire hd 7950 
RAMHard DriveCoolingOS
samsung eco samsung f3 1tb corsair h100i windows 7 
MonitorKeyboardPowerCase
asus vh238h cooler master quickfire tk rosewill capstone 650 fractal design define r4 
MouseMouse PadAudio
corsair m60 steelseries qck+ rokkit 5 
CPUMotherboardGraphicsGraphics
i7 3570k ASRock Z77 WS sapphire hd 7950 flex sapphire hd 7950 flex 
GraphicsGraphicsRAMHard Drive
sapphire hd 7950 flex sapphire hd 7950 flex corsair vengeance 8gb 1866 samsung 840 120gb 
CoolingPowerCaseOther
h220 CORSAIR AX1200i nzxt switch 810 Individually Sleeved Modular Cable upgrade kit ... 
  hide details  
Reply
post #5 of 9
Quote:
Originally Posted by gtsteviiee View Post

Also, my kill-a-watt meter is reading that the whole computer is only using 300w while the whole pc is under load, well the graphics cards.

This is, quite literally, impossible.

If you are pushing FOUR R9 270's at full load you're talking at LEAST 150-200 watts PER card. So at the minimum you're looking at 600 watts for the video cards. Minimum. No way your Kill-A-Watt is correct or something else is majorly wrong...
post #6 of 9
Thread Starter 
Quote:
Originally Posted by AndroidVageta View Post

This is, quite literally, impossible.

If you are pushing FOUR R9 270's at full load you're talking at LEAST 150-200 watts PER card. So at the minimum you're looking at 600 watts for the video cards. Minimum. No way your Kill-A-Watt is correct or something else is majorly wrong...

Yeah, I really don't know what's going on now.
idk
(15 items)
 
 
CPUMotherboardGraphicsGraphics
i5 3570k p8z77-v pro sapphire hd 7950 sapphire hd 7950 
RAMHard DriveCoolingOS
samsung eco samsung f3 1tb corsair h100i windows 7 
MonitorKeyboardPowerCase
asus vh238h cooler master quickfire tk rosewill capstone 650 fractal design define r4 
MouseMouse PadAudio
corsair m60 steelseries qck+ rokkit 5 
CPUMotherboardGraphicsGraphics
i7 3570k ASRock Z77 WS sapphire hd 7950 flex sapphire hd 7950 flex 
GraphicsGraphicsRAMHard Drive
sapphire hd 7950 flex sapphire hd 7950 flex corsair vengeance 8gb 1866 samsung 840 120gb 
CoolingPowerCaseOther
h220 CORSAIR AX1200i nzxt switch 810 Individually Sleeved Modular Cable upgrade kit ... 
  hide details  
Reply
idk
(15 items)
 
 
CPUMotherboardGraphicsGraphics
i5 3570k p8z77-v pro sapphire hd 7950 sapphire hd 7950 
RAMHard DriveCoolingOS
samsung eco samsung f3 1tb corsair h100i windows 7 
MonitorKeyboardPowerCase
asus vh238h cooler master quickfire tk rosewill capstone 650 fractal design define r4 
MouseMouse PadAudio
corsair m60 steelseries qck+ rokkit 5 
CPUMotherboardGraphicsGraphics
i7 3570k ASRock Z77 WS sapphire hd 7950 flex sapphire hd 7950 flex 
GraphicsGraphicsRAMHard Drive
sapphire hd 7950 flex sapphire hd 7950 flex corsair vengeance 8gb 1866 samsung 840 120gb 
CoolingPowerCaseOther
h220 CORSAIR AX1200i nzxt switch 810 Individually Sleeved Modular Cable upgrade kit ... 
  hide details  
Reply
post #7 of 9
Quote:
Originally Posted by gtsteviiee View Post

Yeah, I really don't know what's going on now.

Your avatars expression is spot on haha...well I would blame a bad power supply or possible motherboard issue. Only way to know for sure if it's one of the other is to test them separately using known good parts.

Keep me updated...curious now more than anything!
post #8 of 9
Thread Starter 
Quote:
Originally Posted by AndroidVageta View Post

Your avatars expression is spot on haha...well I would blame a bad power supply or possible motherboard issue. Only way to know for sure if it's one of the other is to test them separately using known good parts.

Keep me updated...curious now more than anything!

I think I just fixed it by updating my wi-fi card drivers.. It's been running for an hour now without problems.
idk
(15 items)
 
 
CPUMotherboardGraphicsGraphics
i5 3570k p8z77-v pro sapphire hd 7950 sapphire hd 7950 
RAMHard DriveCoolingOS
samsung eco samsung f3 1tb corsair h100i windows 7 
MonitorKeyboardPowerCase
asus vh238h cooler master quickfire tk rosewill capstone 650 fractal design define r4 
MouseMouse PadAudio
corsair m60 steelseries qck+ rokkit 5 
CPUMotherboardGraphicsGraphics
i7 3570k ASRock Z77 WS sapphire hd 7950 flex sapphire hd 7950 flex 
GraphicsGraphicsRAMHard Drive
sapphire hd 7950 flex sapphire hd 7950 flex corsair vengeance 8gb 1866 samsung 840 120gb 
CoolingPowerCaseOther
h220 CORSAIR AX1200i nzxt switch 810 Individually Sleeved Modular Cable upgrade kit ... 
  hide details  
Reply
idk
(15 items)
 
 
CPUMotherboardGraphicsGraphics
i5 3570k p8z77-v pro sapphire hd 7950 sapphire hd 7950 
RAMHard DriveCoolingOS
samsung eco samsung f3 1tb corsair h100i windows 7 
MonitorKeyboardPowerCase
asus vh238h cooler master quickfire tk rosewill capstone 650 fractal design define r4 
MouseMouse PadAudio
corsair m60 steelseries qck+ rokkit 5 
CPUMotherboardGraphicsGraphics
i7 3570k ASRock Z77 WS sapphire hd 7950 flex sapphire hd 7950 flex 
GraphicsGraphicsRAMHard Drive
sapphire hd 7950 flex sapphire hd 7950 flex corsair vengeance 8gb 1866 samsung 840 120gb 
CoolingPowerCaseOther
h220 CORSAIR AX1200i nzxt switch 810 Individually Sleeved Modular Cable upgrade kit ... 
  hide details  
Reply
post #9 of 9
LOL! If it's Wifi drivers that would be some completely unrelated sh!!!t haha!
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Power Supplies
Overclock.net › Forums › Components › Power Supplies › EVGA SuperNOVA 750G 750w power supply having trouble running 3 R9 270s? [Mining question]