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Z97X UD3H + I7 4790K Problems

IvanS

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Z97X UD3H + I7 4790K Problems
« on: May 28, 2017, 01:42:31 pm »
Hello guys,

So I've been having a long-standing issue with my board and CPU, whereupon Intel XTU shows ridiculous voltages being supplied to the CPU (3.5k+) and this affected temperatures and other things quite badly, obviously. I have F8 BIOS and the BIOS itself seems to indicate normal numbers (88w and 105 ampers) but I'm not sure this is reality "in the field". Lately, I've been getting WHEA uncorrectable errors at random (funnily enough, usually NOT when gaming, though it happened to) and I've uploaded several crash dumps and tried to get help in this thread: http://www.tomshardware.co.uk/forum/id-3423191/whea-uncorrectable-error-windows.html#19744943

Please have a look there for more info, and if anyone can help regarding this issue it would be very very appreciated.. I am almost certain that the issue with WHEA is CPU/MOBO-related, but even if it's not the issue still remains that I have to set voltages manually in XTU to get them right, even though I have F8, which is supposedly a few BIOS iterations since this bug was fixed.

If anyone can't be bothered looking through that thread, here are just the crash logs:
https://pastebin.com/nynzUMwm
https://pastebin.com/R42056HG
« Last Edit: May 28, 2017, 02:30:18 pm by IvanS »

shadowsports

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Re: Z97x UDH3 + I7 4790K Problems
« Reply #1 on: May 28, 2017, 03:12:14 pm »
Interesting issue.  Sorry to hear about it.  I basically have the same base configuration, and BIOS rev, but do not have the WHEA errors.  The 4790k does see pretty high stock voltages and has a high 88w TDP.  I do not OC or use any Gigabyte / 3rd arty utilities for over clock.  I have stock cooling and in general use Auto to manage CPU and memory in BIOS.

Things I would ask you that are not apparent....

Did the system ever work normally?
Did you perform a fresh install of  windows 10 or was this an upgrade?
Was the install migrated from another system?
Have you tried (tested) with another PSU?
Tested with different memory?
What kind of CPU cooling are you using?
Are you using or have you used any BIOS profiles?
What about Easy Tune in the OS? (Profiles, or custom settings)?
Intel XTU - I haven't used this, but using multiple programs (profiles) together can sometimes conflict causing instability.

I don't deny this could be a hardware problem, but there are other circumstances that may play a role in the behavior.
Z390 AORUS PRO (F10) \850w, 9900K, 32GB GSkill TriZ RGB - 16-18-18-38, RTX 2080 FTW3 Ultra, 960 Pro_m.2, W10 1903
Z370-HD3P (F5) \750w, 8350K, 8GB LPX 3200 - 16-18-18-38, GTX 970 FTW SC, Intel SSD, 2TB RAID1, W10 1903
Z97X-UD5H \850w, 4790K, 16GB Vengeance, GTX 970 FTW SC, RAID0

IvanS

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Re: Z97X UD3H + I7 4790K Problems
« Reply #2 on: May 28, 2017, 04:26:06 pm »
Hey man, thanks for the reply!

So yeah.. the WHEA issue is fairly recent (couple of weeks, doesn't necessarily happen every day and usually not more than once), but the voltage issue was always there, and I did try different memory sticks.. in fact I even have currently something that COULD be a problem, but is very likely not, because it worked fine before, works now and I tested all 4 sticks: two are 2100mhz and 9/11/11/31 while two are 11/13/13/31 2400mhz.. this doesn't normally work so I set them to 10/11/11/31 2100mhz and they both work.. I really did test this for over 6 months and had no problems so I seriously doubt this is an issue, especially as some of these problems (CPU voltage) occured even when only having one or two of the same sticks in there. XMP is also off.

I only use XTU to reduce the voltage, and even if I don't I just boot it up to check if it's the right voltage (and that's when it spazzes and says stupendously high numbers).. I don't REALLY know if it gets that much voltage ofc, but it does tend to get hot considering I have a very good case and a pretty decent custom AKASA heatsink+fan.

The real weird issue is this.. these WHEA errors did start only reasonably recently, with another install of Windows, whereupon the CPU also stopped heating up so much despite supposedly getting all this extra voltage. I am pretty certain SOMEWHERE in that line of bios/cpu/windows there is a problem, but short of another Windows re-install and hoping for the best I don't know what else can be done. And I'm 100% sure it won't fix the over-volting issue, as that has plagued me for years now, on many different Windows installs. As for the PSU, I have an 850W Corsair RM, I simply don't have another PSU  to test with but this one had no problems running a 390x AND 4790k for almost 2 years (I have a 1070 now). I can't say it's GFX either because the WHEA thing started about 2 weeks before I got the 1070, and I even blamed the GFX for it initially.

Do you think there are some general fail-safe settings I could manually adjust in BIOS to get a constant voltage to the CPU and turn off AutoOC (or whatever the hell that 4-4.4mhz boost clock is called)? I mean, I think Gigabyte's OC is already off for me, that turbo-whatever clock thing is an Intel feature, I believe... perhaps if I set a constant voltage in BIOS and do everything manually, it will work better?
« Last Edit: May 28, 2017, 04:30:47 pm by IvanS »

IvanS

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Re: Z97X UD3H + I7 4790K Problems
« Reply #3 on: May 30, 2017, 05:05:14 pm »
Just a quick update.. too early to celebrate, but it's been about two days now with no WHEA's, ever since I simply increased the VCORE in BIOS from 1.266 to 1.300. I really don't understand why it needs that much,  but so far it definitely seems that this was the culprit.. will see by the end of the week, I guess.

shadowsports

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Re: Z97X UD3H + I7 4790K Problems
« Reply #4 on: May 30, 2017, 05:32:44 pm »
That would be great news.  Hoping for the best :)
Z390 AORUS PRO (F10) \850w, 9900K, 32GB GSkill TriZ RGB - 16-18-18-38, RTX 2080 FTW3 Ultra, 960 Pro_m.2, W10 1903
Z370-HD3P (F5) \750w, 8350K, 8GB LPX 3200 - 16-18-18-38, GTX 970 FTW SC, Intel SSD, 2TB RAID1, W10 1903
Z97X-UD5H \850w, 4790K, 16GB Vengeance, GTX 970 FTW SC, RAID0

 

anything