• Competitor rules

    Please remember that any mention of competitors, hinting at competitors or offering to provide details of competitors will result in an account suspension. The full rules can be found under the 'Terms and Rules' link in the bottom right corner of your screen. Just don't mention competitors in any way, shape or form and you'll be OK.

High CPU Core Voltage (stock settings)

billyonecan

billyonecan

billyonecan

Associate
Joined
3 Jan 2014
Posts
80
Hello all

I've been having some issues with my CPU temperature (idle temps are fine [~30°C], but under any load it'll spike as high as 95°C playing games like BF1). The temperature changes seem very rapid as well (HWMon will show a spike from ~30°C to ~70° in under a second when the CPU is under load).

CPU isn't overclocked (i7 4790k "Devil's Canyon") and has a Corsair H75 liquid cooler.

The BIOS is running with optimized defaults (GIGABYTE Z97X-SOX Force).

CPU-Z is showing that the core voltage is 1.419v. Am I right in thinking that this is very high for stock settings, and is also possibly the reason for the high temps? I don't know anything about overclocking or messing with voltages, so any advice would be greatly appreciated.
 
I had a look at the vcore voltage was set to auto. I tried setting it manually (-0.219v), saved and rebooted. The machine shut off almost instantly and then turned back on stating that it failed to boot. Loaded defaults again and it booted up, but again at 1.419v :confused:
 
I've flashed the bios to the latest revision. Core voltage is now 1.217v (auto [down from the 1.419v]) but it's not stable in Windows. I've completed frozen 3 times trying to write a reply. Another thing I've noticed is that all cores appear to be running at their boost clock speed all the time (4.4ghz reported in BIOS and by CPU-Z). Is this the intended behaviour or is there something else happening here as well?

Just to give you a little extra information. This build is over 2 years old, I bought on Black Friday 2014 from overclockers. As far as I'm aware, it'll have been running at this voltage since bought :/ I've never had any instability issues, and have never experienced any crashing. The only reason I noticed is because I'd moved the components in to a new case, and on a whim decided to install hwmonitor and cpu-z, and noticed the temperatures on load were high (this was with the stock cooler). I replaced the stock cooler with the Corsair H75, the temperatures are slightly lower (maxed at 85°C) but are still too high
 
Last edited:
@BluD would it still show the sustained boost speed in the bios if max performance was enabled in Windows? I've disabled max performance (CPU-Z now shows a core speed which sits at around 800mhz idle) - I didn't even know I had it enabled :/ I've been stable for around 20 minutes now (with XMP enabled, it was disabled after flashing the bios).
 
Last edited:
I haven't messed around with the ram voltages, there was a profile already available which matches my ram's clock speed (2133mhz, the default with XMP disabled was 1333mhz). Fingers crossed it's all sorted, you guys are life savers.
 
Last edited:
hwmon shows the voltage at ~0.760v (currently idle), min 0.732v, max 1.224v.
max temperature is down from 72°C to 51°C idle (sits at around 30°C).

should i still be worried about the voltage or is 1.224v ok?
 
Last edited:
i thought so, i loaded BF1 up - complete freeze after about 2 minutes :(

i checked out the xmp profile and the ram voltage is already at 1.65v. I've no idea what to do to fix the problem :(

is this likely to be related to ram or the cpu
 
Last edited:
Sorry Brazo I'm a complete novice, I have no idea what (or where) load line calibration is. Is this something I'd find in the BIOS?

I presume the cpu input voltage is the entry labelled VIN1 on hwmon(?) - 2.004v
 
@mmj_uk it sounds like it might have, but until i noticed the high temps and changed the voltage it has been rock solid for 2 years (despite the high temps) - never experienced a crash. also it appears to idle nice and cool, and only reaches those high temps under intense load so i'm hoping it's not completely toast. i've inspected the motherboard but don't see any signs of damage to anything in there (though in all honesty i'm not entirely sure what to look for)

here's a screenshot from hwmonitor, you'll probably be able to get answers to any questions that i haven't answered yet:

68mF8Aq.jpg
 
i'm wondering whether or not this will be covered by warranty. apparently the cpu comes with a 3 year overclockers.co.uk warranty, whether the fact that i bought it as part of a bundle will affect it i don't know.

just fyi this is the bundle i bought in November 2014: https://www.overclockers.co.uk/hard...-teamgroup-2133mhz-ram-superfl-bu-014-gi.html

what would be the best thing to do next? just keep increasing the voltage to the cpu until it's stable, and then wait for it to [eventually] die?
 
cpu

GAo0qLH.jpg
xq6J47y.jpg

ram (2 sticks but info in both was identical)

2vXV2CY.jpg

mobo (i'm not sure what you needed from here so this is the default view - let me know what you need specifically)

5ngr9GE.jpg

let me know if you need anything else
 
ok so a little update. after resetting to bios defaults and enabling xmp, i managed to run csgo for around 20 minutes without issue, then bf1 for about 10 minutes before it locked up, this time i got a stop code in win10 - CLOCK_WATCHDOG_TIMEOUT, which I believe is related to the CPU. temps during this time weren't very high, playing csgo peaked at around 55°C, bf was warmer, but not massively high at 69°C so it seems overheating isn't an issue.

What are my options at this point? Would I be best off just adjusting the voltage to the CPU in increments from the stock voltage and see if I can get it stable?
 
You must log in or register to reply here.
Back
Top Bottom