PC shutting down running GTX 1080 SLI [SOLVED]

J

Jayham

Gawd
Joined
Nov 25, 2008
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So I decided to run SLI 1080's and drop my most recent 1060 in my SFF

When running 3DMark Firestrike with +182/500 will run and complete Fire Strike but when I slide power limiter all the way up and run Firestrike PC shuts down, after the 1st test is completed, start of or in the middle of second test. PSU is Corsair HX850i more than enough power. 6700k is @4.6GHz not really sure what is going on, my guess is PSU issue? PSU is warm to the touch after shut down, suggestions...

Ambient temperature is around 20-22c and case is a CM Master Box 5 not the S340 in sig.
 
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Might be overclocking, I ran dual 6970s and a [email protected]? on an Antec CP-850.


Edit: Meant to say it might be crashing from too high of an overclock, trying removing the memory overclock and see how it goes, or maybe dropping that 182 down 10-20.
Though when the overclocks on my 1080 failed; it just reset the video driver rather then crashed the whole computer.
 
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It's totally sounds like the psu. How old is that one? They do degrade over time. Next one get a 1000watt model.
 
Faulty PSU IMO. Its a single rail design, should have no issues.

RMA it.


EDIT: What version GTX 1080 are we talking here? 2x 8pin version with power limit cranked... Could be exceeding the 71amps on the 12v rail.
 
Crosshairs said:
it sure sounds like a PSU issue..can you swap it out and test again?
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I have other PSU's a Corsair RM850, EVGA P2 1k, EVGA G2 750w, and a EVGA 650 GQ. I will have to try soon been busy though.

defaultluser said:
You might be cutting things a little close with massive overclocks on everything.

But you should be okay with 850w.

Have you checked to see if your PSU is operating in single-rail mode or dual-rail mode? Apparently that stupid Corsair Link Digital software can switch modes, so god knows what the default mode is?

HXi Series HX850i High-Performance ATX Power Supply — 850 Watt 80 Plus® Platinum Certified PSU
Click to expand...

That's what I thought!

eclypse said:
It's totally sounds like the psu. How old is that one? They do degrade over time. Next one get a 1000watt model.
Click to expand...

I purchased a brand new HX750i May/June this year from MC and that was RMA'd due to fan not working and they sent me the HX850i as a replacement.

Rvenger said:
Faulty PSU IMO. Its a single rail design, should have no issues.

RMA it.


EDIT: What version GTX 1080 are we talking here? 2x 8pin version with power limit cranked... Could be exceeding the 71amps on the 12v rail.
Click to expand...

These are both the 1080 FE, single 8 pin.
 
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I have other PSU's a Corsair RM850, EVGA P2 1k, EVGA G2 750w, and a EVGA 650 GQ. I will have to try soon been busy though.
Click to expand...

That P2 1kw sounds nice.
 
Rule #1 when overclocking and something fails - go back to stock mode and see if it still happens.

Rule #2 - there is no fight club.
 
Okay fixed shutting down issue by adding a second PCIE cable to PSU using same HX850i

Was even able to add +200 on CPU core and run 1080's in SLI with PL at max.

27,112 4.8GHz +182/500 PL Max

26,832 4.6GHz +182/500 PL Max

26,615 4.6GHz +182/500 PL Default
 
Jayham said:
Okay fixed shutting down issue by adding a second PCIE cable to PSU using same HX850i

Was even able to add +200 on CPU core and run 1080's in SLI with PL at max.

27,112 4.8GHz +182/500 PL Max

26,832 4.6GHz +182/500 PL Max

26,615 4.6GHz +182/500 PL Default
Click to expand...
lol you were powering both 1080's off one cable before? You expect a lot from the power supple lol yea one cable not enough for 2 cards lol:eek:
 
Yeah lol I forgot that I had only one cable attached, I have two sleeved (custom 8 pin) cables coming out from behind PSU cover :banghead:
 
Don't beat yourself up.
I'm sure you're not the first one that did this and won't be the last either!
 
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