cpu voltage question

packersfan036 · Nov 9, 2017

I overclocked my i5 7600k on my asus maximus 8 hero motherboard. weird thing I set the voltage in the bios to 1.170v but the id programs are saying the vcore is 1.185, not a big deal but I'm just curious to why it would do that? oh and I got up to 4.7 ghz no problem very low temps using my corsair h60 cooler

connerweatherly17 · Nov 9, 2017

Programs don't always read things properly, things like HWMonitor can sometimes have faulty clock speeds, tempatures, Voltages... Ect. It's just a problem with the program accessing the bios for whatever reason

TJ Hooker · Nov 9, 2017

Are you seeing 1.185V at load or at idle?
What sort of temps are you getting, and what are you using to stress test?

packersfan036 · Nov 9, 2017

connerweatherly17 :

using cupid for info and intel extreme tuning utility for stress test love that program

TJ Hooker · Nov 9, 2017

It's normal for measured Vcore to be a bit different than what's set in BIOS. Also, there's something called load line calibration (LLC) that adjusts voltage under load. I believe it would normally reduce it, but for overclocking it's normal to set LLC to high, so it might increase voltage a bit.

packersfan036 · Nov 9, 2017

TJ Hooker :

voltage stays steady but speed changes depending on load. everything is stable temps etc no problems at 4.7 ghz.

TJ Hooker · Nov 9, 2017

What sort of temps are you getting?

Running Prime95 v26.6 small FFTs is sort of the standard for thermal stress testing AFAIK, but I'm sure XTU is fine too.

packersfan036 · Nov 9, 2017

TJ Hooker :

29c to 31c idle 45c to 50c load

TJ Hooker · Nov 9, 2017

I'll be honest, those load temps sound suspiciously low. How long does the test last? I'd recommend giving the Prime95 test I mentioned earlier a try.

packersfan036 · Nov 9, 2017

temps are correct checked in bios as well and also a few temp monitors. I hit the silicon lottery lol

packersfan036 · Nov 9, 2017

TJ Hooker :

I won the silicon lottery

TJ Hooker · Nov 9, 2017

Checking temps in BIOS is kind of useless, because those are idle temps. I'm not necessarily saying your temperature readings are inaccurate. It could just be that you're not running XTU long enough, or it isn't a sustained max load, such that you get true 100% load temps. Run Prime95 v26.6 small FFTs for 15+ minutes, curious what your temps would be in that case.

packersfan036 · Nov 9, 2017

TJ Hooker :

ill run xtu longer, I don't use prime95 don't like it. and like I said I won the silicon lottery lol

packersfan036 · Nov 9, 2017

TJ Hooker :

ok just ran xtu for 15 min temps under that load went to 53c I also ran cinebench same temps and a score of 759

TJ Hooker · Nov 9, 2017

Ok, that's pretty good then.

I decided to try out XTU myself. It does seem to give temps about 10 degrees lower than with P95, but if that's what you want to test with that's your prerogative.

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