Z370-E w/ i7 8700K and GTX 1080 Crashing Under Graphics Load

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joshprentice775

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Jan 25, 2015
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Long story short, PC needed a refresh and just finished the build. With basic BIOS defaults and current drivers, my system is crashing during either gameplay or benchmark testing . This is only under GPU load. System is stable and hasn't crashed while multitasking or running other benchmarks . I'm at my wits end with troubleshooting. CPU and GPU temps are fine under load, CPU floating around 65C and GPU around 75C (ACX 3.0 air cooled). My system isn't generating any crash dumps to go through (already checked page file size and crash dump settings.) I've cut it down to the following theories:

-GPU related, as I can run the same benchmark tests with just the integrated GPU on i7 without the machine crashing.

-PSU Related. Added up my build in a couple of calculators and they average to 500W, so my 750W should have enough overhead.

-BIOS Related. I originally thought it was the XMP profile messing with the voltages and thought it might have been RAM related. I must mention that I updated the BIOS to a new version that was released 4 days ago, which could be the culprit. I cannot revert back to the previous BIOS version, as I get an error in the EZ Flash Utility saying that 3 prior CAP files are "not a proper BIOS."

UPDATE: Toned down power target on GPU to 90% and it passed the first part of the 3D Mark Benchmark, but received an error when loading Graphics Test 1 and stopped (Time Spy test). Making progress!

Not sure what else to do at this point, so I'm hoping my fellow IT brethren will assist. Thank you ahead of time. Here are my components:


-i7 8700k @ 4.4gHZ
-DeepCool Captain 240EX RGB
-Asus ROG Strix Z370-E Mobo
-EVGA GTX 1080 ACX 3.0
-4x G.Skill TridentZ 3200 8GB (Total of 32GB clocked at 2133 at the moment for troubleshooting purposes).
-Corsair CX750m PSU
-AIO Cooler Config: Pump on the AIO Pump Header; Radiator Fans connected to CPU_OPT header
 
Solution
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2 years with that PSU tells me it's on the decline. Not the first time I have heard that response. Everything works fine till it doesn't.

Your CPU and GPU have built in power saving features. When not needed they run very slow and consume very little power. When you start a video game there is a power surge as your CPU and GPU hit max speed. This surge is apparently too much for your PSU. Corsair CX series isn't a good model for gaming. TX is the minimum I would use, but I would recommend Seasonic focus gold over corsair.
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joshprentice775

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Just finished with a clean display driver install. Ran the benchmark and the machine is powering off towards the end like it has been.

 
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joshprentice775

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No custom overclocks, just the default settings on both CPU and GPU. Although Turbo Boost for the CPU is set to 4.7, it usually stays at 4.4. GPU boosts to around 1.85 gHZ, but tones back sometimes and sticks between 1680 - 1800 mHZ
 
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joshprentice775

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I was plugged into a surge protector/strip, then moved to a UPS. Same issue. Only thing I haven't tried was directly to the wall outlet. If I should try that as well, I can hunt down an extension cable. I should also note a regular stress test running for 20 minutes won't shut the machine down. It seems it's only during graphics processing that my machine decides to bump the power. I stress tested all system components using AIDA64 and didn't notice any power dips below the 5 or 12 volt.

 
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joshprentice775

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Going to drop the GPU in my buddy’s computer tomorrow and use his GPU in my system to see what happens. If I stay up while gaming, then yay! But if my card doesn’t bump his system, not sure what to do from here.
 
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jankerson

jankerson

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PSU issue, replace with a good unit.
 
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joshprentice775

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This PSU has been in use for the last 2 years without issue. I appreciate the solution but instead of saying it’s a bad unit, I need an explanation why that is. You’d think after stress testing and the system drawing from the unit without dips on the rails that it would be something else. It’s only when graphics are displayed on screen, which makes absolutely no sense unless it’s driver related. But we ruled that out.
 
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jankerson

jankerson

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REPLACE THE PSU with a good one.

The CX series is a budget unit not ment for gaming systems etc.

REPLACE IT....
 
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bmockeg

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May 11, 2018
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2 years with that PSU tells me it's on the decline. Not the first time I have heard that response. Everything works fine till it doesn't.

Your CPU and GPU have built in power saving features. When not needed they run very slow and consume very little power. When you start a video game there is a power surge as your CPU and GPU hit max speed. This surge is apparently too much for your PSU. Corsair CX series isn't a good model for gaming. TX is the minimum I would use, but I would recommend Seasonic focus gold over corsair.
 
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Solution
jankerson

jankerson

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I am surprised it lasted that long, must not have been under a lot of stress until now.

They have a long history of failing, wattage doesn't matter.

Shame people still buy into the marketing.... Then cheap out and buy one of those CX units. :sarcastic:

I can't believe people are still falling for that.

The RMX is the least I would recommend from Corsair for a gaming system.

With good PSU's out there like:

Corsair RMX
Seasonic Focus Plus
EVGA G2 and G3...

 
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joshprentice775

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Jan 25, 2015
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Appreciate the explanation. I'll keep you posted after the install of the new one and let you know how it goes.

Thank you.

 
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joshprentice775

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Jan 25, 2015
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Bought a Seasonic 750PX Platinum that will be here tomorrow. Also, put my buddy's GTX 970 in my system and ran the same benchmarks. No issue. He also did some benchmarks with my card in his system. No issues. I think it's safe to say that you are correct my friend. Started in the business as a PC Tech guy and now that I've been a Network Engineer for a number of years, seem to have forgotten a few things. Really appreciate the assist.
 
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joshprentice775

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So I swapped the power supply with the Seasonic 750PX and it ran fine for about an hour. Benchmarks were solid and could finally stay in a game. I exit to my desktop then I go eat dinner and come back; system is powered off but motherboard shows it’s receiving power. Tried to turn the system on and it dies after half a second. I inspected the case and can’t find anything that would indicate a short. Any ideas
 
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jankerson

jankerson

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Pull everything out and bread board it to be sure.
 
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joshprentice775

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Jan 25, 2015
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So it turns out the Seasonic 750 Platinum I bought was a bad unit. Tested the PSU with a test plug and it would not power on. Didn't want to wait for another shipment, so I found a Corsair RMX at Best Buy. Been running great ever since. Now if I can only keep these temps down. Thank you all for the assist.
 
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