Troubleshooting crashes: New Power Supply

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Seaclam

Distinguished
Aug 1, 2007
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18,630
I've been getting a lot of crashes with my video card/driver. I've done thorough testing on the cards individually in both PCIe slots with no crashes. Cards seem to be fine. Memory seems fine. Uninstalled/clean re-installed drivers to no avail. On one of my crashes I did receive a post claiming the card had no power and that I needed to plug the power cables in, which of course they were. This has pointed my troubleshooting in the direction of the power supply. It's a 3 year old Corsair AX1200 for when I had the original system built running 580's in SLI, generation 2 i7 cpu, 1333 memory and a regular HD. My upgraded system specs are below and I want to be sure I can just go out and get another 1200w or is that not enough anymore? I am not over-clocking anything.

System: Air cooled Haf-X tower
Z68 AsRock Fatality Gen 3
Intel Ivy i7 3770K 3.5
16 Gb Corsair Dominator 1866
2x EVGA GTX 780 3Gb
Creative Labs ZxR
Samsung Evo 750 SSD
300Gb Velociraptor for iTunes music
500Gb data drive
 
Solution
ko888
For a system using two GeForce GTX 780 graphics cards in 2-way SLI mode NVIDIA specifies a minimum of a 850 Watt or greater system power supply that has a maximum combined +12 Volt continuous current rating of 65 Amps or greater and that has at least two 6-pin and two 8-pin PCI Express supplementary power connectors.

Total Power Supply Wattage is NOT the crucial factor in power supply selection!!! Sufficient Total Combined Continuous Power/Current Available on the +12V Rail(s) rated at 45°C - 50°C ambient temperature, is the most critical factor.

Borrow a PSU to troubleshoot with. If the substitute works then arrange an RMA...
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lonewolf7

lonewolf7

Splendid
May 6, 2013
5,113
2
24,965
A 1000W PSU will be enough for SLI 780.

No need for 16GB of RAM, will be an overkill, stick to 8GB.

You can get a better MB :

PCPartPicker part list / Price breakdown by merchant / Benchmarks

Motherboard: ASRock Z77 Extreme4 ATX LGA1155 Motherboard ($134.98 @ OutletPC)
Power Supply: Corsair Professional 1050W 80+ Gold Certified Semi-Modular ATX Power Supply ($238.24 @ TigerDirect)
Total: $373.22
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2013-12-19 14:39 EST-0500)
 
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cin19

cin19

Titan
Mar 14, 2011
15,726
218
112,340


I will only connect the SSD, 2x gtx780, but not the other hdd or hardware like that sound card to see the PC still crashes or not, also update the chipset driver from intel website https://downloadcenter.intel.com/Detail_Desc.aspx?DwnldID=20775 because the chipset driver will controll the pcie slot, RAM, etc. If the PC does not crash then add the HDD or sound card one by one. If the PC does crash without other hardware, then maybe the MB or PSU, or idk.

Like ohter members said the 1200w is more than enough even the psu is 3 yrs old.

Add, maybe the BISO too.
 
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ko888

ko888

Titan
Feb 18, 2009
16,708
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84,990
For a system using two GeForce GTX 780 graphics cards in 2-way SLI mode NVIDIA specifies a minimum of a 850 Watt or greater system power supply that has a maximum combined +12 Volt continuous current rating of 65 Amps or greater and that has at least two 6-pin and two 8-pin PCI Express supplementary power connectors.

Total Power Supply Wattage is NOT the crucial factor in power supply selection!!! Sufficient Total Combined Continuous Power/Current Available on the +12V Rail(s) rated at 45°C - 50°C ambient temperature, is the most critical factor.

Borrow a PSU to troubleshoot with. If the substitute works then arrange an RMA for the AX1200 with Corsair and they'll send you a new one once they receive the broken one.
 
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