cpu high voltage when auto

isaac4643

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Dec 3, 2016
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Gigabyte h55m-ud2h
I7 870
X2 4gb generic samsung ram 1333
Psu is from coolermaster

Issue: cpu vcore is 1.4v when everything is on stock. Even if i bump up the bclk it boots and says it failed to boot, the same result when i manually reduce the vcore. Ive been fiddling with the settings and to no avail i turn to the experts here.

Story:
It is my younger brothers pc. He had x4 2gb ram a total of 8gb which was 1066(i think) in his system. I gave him x2 4gb ram as a gift so he can later upgrade it if he wants to.

Ive recently noticed that the pc was running stupidly hot so i opened up hw monitor to seewhat was up. The cpu was at 89c on boot and slowly reduced itself to 69c (this is just idle, on load it hits 95c. I opened the pc up re thermal pasted it and found that it was still hot. I later found out that the vcore was 1.4v so i underclocked it to 1.15v it worked and i got a bit greedy and upped the bclk. Everything worked it booted ran unigine valley, ran aida 64 stress test and everything. I turned it off and turned it back on to remove all the benchmarks and software i downloaded as it would be bloatware for my younger brother, to only find an error message that a overclocking caused a issue in the boot. I set everything to default booted up and it was 1.4v again. So i underclocked it from 1.15 to 1.3 to no avail.

Ive been fiddling with this pc for 3hrs and its 3am in the morning im lost for words and am even questioning my own memory if i did indeed get a 1.15v and stable system

I need answers is the cpu or mobo dying? Is it the new ram thats doing this to the pc? Ive read that some softwares can cause issues similar to this but didnt find anything suspicious in the program list in control panel.

Best regards.
A man whos lost for words...
 
Solution
I don't think it is the CPU. I suspect the motherboard (or more specifically the BIOs and/or the BIOS battery).
I would suggest you re-set the bios to default entirely. Then check the voltages. If it is not running at 1.145V, change it to that (this is the default for that CPU). Reboot and check your bios to see if the setting held. If it didn't, then I would try replacing the BIOS battery. Alternately you could try to flash the bios.
I don't think it is the CPU. I suspect the motherboard (or more specifically the BIOs and/or the BIOS battery).
I would suggest you re-set the bios to default entirely. Then check the voltages. If it is not running at 1.145V, change it to that (this is the default for that CPU). Reboot and check your bios to see if the setting held. If it didn't, then I would try replacing the BIOS battery. Alternately you could try to flash the bios.
 
Solution
Well, firstly on the voltage and auto setting, yes - on auto, most mobo's will overvolt. Typically though it only goes to those voltages on demanding tasks, and drops back quickly (Sustained high voltage above 1.45 is gonna shorten the lifespan of the CPU, and maybe kill it).

Regarding your OC @1.15, I suspect it wasn't set/saved correctly, so when you rebooted and the config took hold, it wasn't suitable for a clean boot.

Use, coretemp, and run it (when CPU is at stock). Look for you VID. This, as I've learned from Tom's posters, is theoretically the max voltage for the CPU to work at stock speeds, flawlessly. Use the VID as your base to work your vcore from.

My example would be my own CPU. My VID is 1.375, so I worked back from there and set my vcore at 1.3 and began my OC'ing experiment. I've managed 3.9ghz on my Ryzen 1600x @ 1.3 and steady Prime95 stress testing for a few hours. All good. The point being, if I had my vcore at 1.15, I know without even trying it's too low.

Just to be clear though, the CPU on auto voltage is not the reason for the CPU to be hitting 89c on boot, IMO. That to me sounds like a cooler problem, or thermal compound needing replacement, what brand did you use? So i'd look at those options before voltage, and undervolting.


On your OC attemps. BCLK OC's can have issues, and have the potential to fry components as it's linked to the other system interfaces, and can OC those too!

If I were you, I'd be focusing on having your CPU run at stock, and getting your temps as low as possible with no OC.
 

isaac4643

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Dec 3, 2016
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Thank you guys for your replys and insight. Sir bjornl was correct and i flashed the bios and everything was working fine. Jeepers i really gota thank you. I reakly didnt want to flash the bios but that seemed to be the reason. Seems like the bios got curropted or something. Hope whoever finds this thread in the future coming for same answers find you guys and your useful tips! Thank you!