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Computer dies at 950W

post #1 of 5
Thread Starter 
I've got a Seasonic Platinum 1000W PSU. I fired up furmark and prime 95 at the same time to see what kind of power draw is possible for my 3960X and SLI 780's. I wanted to see if I needed to upgrade my PSU for a third 780.

At 1050 watts on Kill-A-Watt, my Platinum dies instantly. I then picked up a Seasonic X-1250W and this PSU ran the same thing over again. This PSU lasts a bit longer, a few minutes and then it gives out. So thus I'm left wondering if it's the PSU or if its some watt/current protection kicking in. Both PSU should have handled 1050W at the wall easily. 1050 at the wall @ 90% efficiency is only 950W. Both PSU are rated for it and one's fairly new and the other's brand new. What could be causing this issue?
Hydra TH10A
(15 items)
 
Nova Vault
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CPUMotherboardGraphicsRAM
5960x Rampage V Extreme 3-Way SLI GTX 980 Ti Hydro Copper 16 GB Dominator Platinum 
Hard DriveCoolingCoolingCooling
480GB Intel 730 SSD Raid 0 x4 Custom Loop 4x 480 Alphacool Radiators Aquacomputer Aqualis 
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Acer B326HK Razer Black Widow 2014 Corsair AX1500i  Case Labs TH10A 
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Razer Naga 2014 Megasoma 2 Creative ZxR 
CPUMotherboardRAMHard Drive
Xeon D-1541 Supermicro X10SDV-TLN4F 128GB Crucial DDR4 2133 ECC 10x WD Red 4TB  
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Caselabs Nova  
CPUGraphicsRAMHard Drive
2.9 Ghz Radeon Pro 560 4GB 16 GB 1TB SSD 
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OS 10.11 15 Inch Retina 2880x1800 
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Hydra TH10A
(15 items)
 
Nova Vault
(5 items)
 
 
CPUMotherboardGraphicsRAM
5960x Rampage V Extreme 3-Way SLI GTX 980 Ti Hydro Copper 16 GB Dominator Platinum 
Hard DriveCoolingCoolingCooling
480GB Intel 730 SSD Raid 0 x4 Custom Loop 4x 480 Alphacool Radiators Aquacomputer Aqualis 
MonitorKeyboardPowerCase
Acer B326HK Razer Black Widow 2014 Corsair AX1500i  Case Labs TH10A 
MouseMouse PadAudio
Razer Naga 2014 Megasoma 2 Creative ZxR 
CPUMotherboardRAMHard Drive
Xeon D-1541 Supermicro X10SDV-TLN4F 128GB Crucial DDR4 2133 ECC 10x WD Red 4TB  
Case
Caselabs Nova  
CPUGraphicsRAMHard Drive
2.9 Ghz Radeon Pro 560 4GB 16 GB 1TB SSD 
OSMonitor
OS 10.11 15 Inch Retina 2880x1800 
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post #2 of 5
Despite what it is advertised, these units are multi-rail rather than a single rail design. You may be tripping the OCP on one of the +12v rail. With some trial and error, switch the PCIe cables around for your graphic card around.
post #3 of 5
Anything else, big, on the same maims circuit?

Dual PSUs?

Or this: PC Power & Cooling Turbo-Cool 1200
My System
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FX6300 Black M5A99X EVO R2.0 Nvidia GTS450 Team Vulcan PC3 12800 
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Samsung 840 PRO Asus DRW-1608P (x2) Custom Water Cooling Win7 (Ult), Win 8.1 & Win Server 2012 R2 
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2 X Samsung 915N Ducky Shine III, Blue Cherry/Blue LEDs PCP&C 1kw Lian Li PC-71 (W/Window) 
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My System
(15 items)
 
  
CPUMotherboardGraphicsRAM
FX6300 Black M5A99X EVO R2.0 Nvidia GTS450 Team Vulcan PC3 12800 
Hard DriveOptical DriveCoolingOS
Samsung 840 PRO Asus DRW-1608P (x2) Custom Water Cooling Win7 (Ult), Win 8.1 & Win Server 2012 R2 
MonitorKeyboardPowerCase
2 X Samsung 915N Ducky Shine III, Blue Cherry/Blue LEDs PCP&C 1kw Lian Li PC-71 (W/Window) 
MouseAudio
Logiteck G400s none 
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post #4 of 5
The Kill-a-Watt may not be accurate at high loads.
post #5 of 5
Thread Starter 
It turns out I was stupid and forgot to unhook the additional 4 pin CPU power input on the Rampage IV Extreme. I hooked the 8 pin CPU, 24 pin, and PCI-E to the vid cards on from the X-1250W but left the 4 pin still plugged into the P-1000W. What happened was the X-1250W powered the motherboard and everything but then the power from the motherboard/cpu powered the 4 pin back to the Platinum-1000W which then chained through all the fans and hard drives.

What should have alerted me to this was all the fans, lights, and hard drives were powered up even though they weren't plugged into the X-1250W and the P-1000W wasn't hooked into the wall and thinking.gif

The 4 pin was apparently causing the X-1250W to trip out because it was still attached to the P-1000 PSU. That said, I can't figure out why the P-1000W is still tripping out at 950W.

The Seasonic X-1250W power supply is not loud by any means but it is the loudest item in my computer. Coming from a Seasonic Platinum 1000 which has the exact same fan this is a surprise.I know the plat doesn't spin its fan up until ~400W The Gold X-1250 spins up its fans at like 150W which is what I idle at.
I would have thought by moving up to a larger capacity, the fanless mode range would have been even greater.
Hydra TH10A
(15 items)
 
Nova Vault
(5 items)
 
 
CPUMotherboardGraphicsRAM
5960x Rampage V Extreme 3-Way SLI GTX 980 Ti Hydro Copper 16 GB Dominator Platinum 
Hard DriveCoolingCoolingCooling
480GB Intel 730 SSD Raid 0 x4 Custom Loop 4x 480 Alphacool Radiators Aquacomputer Aqualis 
MonitorKeyboardPowerCase
Acer B326HK Razer Black Widow 2014 Corsair AX1500i  Case Labs TH10A 
MouseMouse PadAudio
Razer Naga 2014 Megasoma 2 Creative ZxR 
CPUMotherboardRAMHard Drive
Xeon D-1541 Supermicro X10SDV-TLN4F 128GB Crucial DDR4 2133 ECC 10x WD Red 4TB  
Case
Caselabs Nova  
CPUGraphicsRAMHard Drive
2.9 Ghz Radeon Pro 560 4GB 16 GB 1TB SSD 
OSMonitor
OS 10.11 15 Inch Retina 2880x1800 
  hide details  
Reply
Hydra TH10A
(15 items)
 
Nova Vault
(5 items)
 
 
CPUMotherboardGraphicsRAM
5960x Rampage V Extreme 3-Way SLI GTX 980 Ti Hydro Copper 16 GB Dominator Platinum 
Hard DriveCoolingCoolingCooling
480GB Intel 730 SSD Raid 0 x4 Custom Loop 4x 480 Alphacool Radiators Aquacomputer Aqualis 
MonitorKeyboardPowerCase
Acer B326HK Razer Black Widow 2014 Corsair AX1500i  Case Labs TH10A 
MouseMouse PadAudio
Razer Naga 2014 Megasoma 2 Creative ZxR 
CPUMotherboardRAMHard Drive
Xeon D-1541 Supermicro X10SDV-TLN4F 128GB Crucial DDR4 2133 ECC 10x WD Red 4TB  
Case
Caselabs Nova  
CPUGraphicsRAMHard Drive
2.9 Ghz Radeon Pro 560 4GB 16 GB 1TB SSD 
OSMonitor
OS 10.11 15 Inch Retina 2880x1800 
  hide details  
Reply
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